two desperate gunmen dressed in bizarre masks and armed with ak-47s. >> a smalltown iowa bank robbed. >> the taller one was lingering in the doorway of the vault. i'd look over there once in a while, but it was like i didn't want to make eye contact. >> a violent chase on desolate gravel roads across two counties. >> i don't think any of us realized they were that eager to fire those weapons. >> officers shot. >> shots fired! >> round splintered, hit my arm. >> my thumb was just about blown off. >> i saw blood dripping from his mouth. i had no idea if he would

survive. >> can these brazen bank robbers be stopped, or is a killing spree just begun? and then, two men dressed as construction workers terrorize bank employees and customers. >> they forced the teller to take them to the vault for the $120,000 in cash in the plastic bag. >> with guns drawn, everyone in the bank knows these robbers mean business. >> he actually pushes her to the ground. he's got the gun in his right hand. >> two years later, they come back and do it again, but this time it's a different story. >> knowing they were armed and knowing it was three against one, of course i had concerns that they were planning to come out shooting at me. >> it's the day before halloween, october 30th, 2012, in the small town of maynard,

iowa. population 513. it's business as usual at the 118-year-old maynard savings bank. inside the bank are five employees. two managers in their offices, one teller at the front counter and two tellers at their desks. there was also one customer and his young son standing next to him. assistant cashier cheryl melchert, grandmother of five who has worked at the bank for 26 years, is helping the customers at the counter. she is the first to see a green sedan arrive outside. >> i looked out the window out of the corner of my eye and saw this green car pull up. i said to the customer, "look at these guys." and the customer turned and looked at him, and the next words that were out of my mouth were, "i hope it's not --" >> the men shout profanities at

the employee and customer. they carry what appear to be ak-47 assault rifles. their faces are covered with bizarre masks. they purchased the $24 masks at a costume store near their homes, about two dozen miles away. >> it was kind of like a grim reaper face with like a jester hat with the bells. it all happened so fast. it didn't seem real when they first came in the door. >> the maynard bank was built in 1895. it currently serves 2,400 customers. in all the time it was in existence, it's never been robbed until now. the bank has several security systems, motion detectors and alarms. but those were always activated after the bank closes.

the only daytime security is two panic buttons located under the counter where the cashiers work. those buttons go directly to the fayette county sheriff. in the dozens of years since they have been installed, the buttons have never been used to alert police. assistant vice president of the bank glenda campbell, who has worked there for 20 yards, is in her office, first door to the right. >> the robbers pass by her, not realizing she's inside. >> i thought it was maybe a really dumb halloween prank. and i sat there quietly until i realized what was taking place. i don't believe they saw me in there or knew i was in there. >> bank manager c.j. lensing's office is the next door on the right. lensing has worked at the bank for 26 years. 13 days earlier, lensing

celebrated the birth of his first grandchild. >> i was on the phone at the time, actually, with our office manager in hazleton, and he entered my office and told me to hang up the phone. and of course she heard that. that's not something you typically hear on the other end of the line. he had an ak-47, so you tend to do what the people with those kind of weaponry ask you. >> what i first noticed out here was c.j. coming out of his office with one behind him. so, i just quietly came to the doorway so that if they did look and saw me there, they wouldn't be startled. >> casher kenda wedemeyer, a six-year employee of the bank and grandmother of two, is at her desk behind the counter. she doesn't move. >> for that split second, you weren't sure it was really happening. but then you knew it was no joke, no prank. and you were almost frozen. >> you don't want to put anybody in jeopardy. they would have gotten upset and

started shooting. it's just money. it's something that can be replaced. lives can't be. >> one of the robbers orders teller cheryl melchert to take all the money from her cash drawer and load it into a duffel bag, but she struggles to get the bag open. seeing that melchert is having problems with the zipper, one of the robbers makes a move toward her just as she gets the bag to finally open. tellers are trained to move slowly, not to alert robbers or make them feel threatened. melchert carefully puts the money from her drawer into the bag. she then moves to another drawer and removes the cash from there as well. the robbers ask employees if there's money at the drive-up window. manager c.j. lensing tells them yes and leads the thieves to those cash drawers, a gun pointed at his back. >> i thought they'd probably know that every drive-up window there's cash there, so i didn't

want to try to fool them by saying no, and then they determine that there was some cash there. that could have made a bad situation worse. >> for the rest of the terrified employees, time stands still. >> we have a radio, and it sits right behind me out on a little table. and the day of the robbery when they were behind the counter, i couldn't tell you if that radio was on or off. it was almost like i couldn't hear. >> it was kind of like looking through a fish bowl or something is kind of what it felt like. >> the taller one walked in both vaults. i think their masks were so big and so hard to see through that he probably really didn't check much out. because we did have extra currency in there that they didn't see. >> i had my eyes mostly on the shorter one that was getting the money from cheryl. the taller was one was kind of lingering in the doorway of the vault. i'd look over there once in a while, but it was like, i didn't want to make eye contact with him. you're trying to get as much

information as you can, descriptive, anything you can remember. you're just trying to scan as much as you can and then try to remember it. >> i thought they were toy guns. i thought they were plastic and i'm by no means a gun expert. i just thought they were a tool to maybe intimidate but never thought they were real. coming up, bank employees have one chance to stop the robbery in progress. get to the security buttons without the thieves noticing. >> they would have seen me reach under there to trigger that. you don't know what they would have done.

two days before the heist at the maynard savings bank, some residents in this small town of 500 reported a strange man lurking outside the bank. it was a sunday, so the bank was closed.

the man peered in the windows in the front door. he walked around the bank, and then he was gone. now two days later, the maynard community savings bank in rural iowa is the scene of a robbery in progress. two men wearing what appear to be halloween masks have employees held at gunpoint. some bank tellers are not sure if the ak-47s these men carry are real. most of them believe the guns are toys. though the weapons look sinister, neither man has pulled the trigger. the ak-47 was originally developed by the soviet union in 1947 as a lethal assault weapon. in its automatic mode, it can fire 600 rounds per minute, more than 400 yards. there are 100 million of these weapons in existence. one of the robbers was able to easily purchase two of them,

even in rural iowa. as the robbers move through the 2,400-square-foot bank, threatening the employees, the cash nears know that there are panic buttons beneath their registers. pushing those buttons would alert the fayette county sheriff, but if they're caught going for the alarms, it could mean disaster. a fatal mistake if the robbers start firing. >> the only one that could have would have been cheryl, but she wasn't in the first window that she went to, there isn't one in there and she really didn't have a chance. >> you don't want to put anybody in jeopardy. you know, if they would have seen me reach under there to trigger that, you don't know what they would have done. >> most modern banks have silent alarms that are triggered when all the money is emptied from a cash drawer, a signal to police that something is wrong. that system does not exist at the 118-year-old bank.

but one thing the bank always does in case of robbery is to have bills with recorded serial numbers in the bottom of each drawer. >> i just started putting the money in the bag, and i made sure i put the fake money in there, and we keep a copy of the actual bill with all the serial numbers on it, and that's a way to identify our money. >> after the initial shouting when they walk in the door demanding money, the men now calmly speak to the employees, giving them instructions on what to do. >> they were cordial to us. they didn't make us lie on the floor, lock us in the vault, put our heads down, none of that stuff that could have happened. i didn't feel like i was going to get killed. >> the robbers make one more pass behind the teller's station. in their duffel bag they have over $15,000. they walk quickly through the lobby and out the front door.

they have been in the bank for nearly three minutes, all of it caught on the bank's security camera. >> they were content to leave with what they had. in a matter of probably less than ten seconds, they were out of the bank. didn't say a word. >> amazingly, the one customer in the bank rushes to follow the robbers out the door. he wants to get the license plate of their car. according to protocol, after the robbery of a bank, employees are instructed to lock the doors. >> i was the one that grabbed my key to lock the door. the customer went to the door, out the door with me. i saw them drive by. they still had their masks on, so i knew it was them. and i think i was shaking. i really literally think i was shaking. it was very frightening. it was very scary. >> once the door is locked and the bank is secure, manager c.j.

lensing quickly goes for a phone to call police. >> 911, what's the address of your emergency? >> i work for the maynard savings bank. we've just been held up. >> you've just been held up? >> yes. >> okay. is the person there? >> pardon me? >> is the person there? >> no, they left. they were going westbound. >> westbound. >> we have a plate number. it's 181-yyw. chickasaw plates. >> and they are westbound? >> yes. >> really didn't hit me until after they were gone, the bank was locked, and then we were hearing the activity after that it kind of became real that they were dangerous. i wasn't frightened because at that point we were safe. we were locked in here. but i think it was just the reality that our bank that has never been robbed in the small town that we never would have expected to have that happen just happened. we were all pretty shaken afterwards. >> you could hardly catch your

breath. like a weight was just on your chest. and i think all of us had a hard time writing down the license plate as they were yelling it back to us. our fingers were not working. >> we were safe, but it's like, wow, what have we just gone through? what just happened? coming up, with police notified, employees are left to wonder, would the two men who just terrorized them be caught or would they go down fighting? >> i don't think any of us realized that they were that eager to fire those weapons.

at the maynard savings bank in rural northeastern iowa, employees are recovering from the traumatic ordeal they've just gone through. two masked gunmen armed with automatic weapons entered the bank, held the people inside at gunpoint and stole more than $15,000 in cash. those who endured the heist are in shock from the experience. >> 11:10 that morning, it was

just another day out of the 20-some years i've been doing this, and then five minutes later, your whole world is changed dramatically. >> when police dispatchers check the registration of the license plate, they get a hit. >> 10-4. it's registered to a subject out of new hampton. jeremiah mumford from new hampton. >> jeremiah mumford is 24 years old. his accomplice is william clayton. today is clayton's 19th birthday. their vehicle is filled with weapons, including two ak-47s which mumford legally purchased in iowa. >> a green '96 ford taurus four-door. licensed to williams -- >> a 1996 ford taurus is hardly the type of car that can outrun a police vehicle. it has 145 horsepower, far less powerful than the engines in most law enforcement cars. but that doesn't stop clayton and mumford from trying to

outrun the police. they head north on the labyrinth of gravel roads that crisscross this section of iowa. fayette county deputy sheriff joe miller picks up the chase as captured by his squad car dash cam. >> 60 miles an hour. approaches. >> i'm getting closer and closer, and all of a sudden, i heard something, sounding like a rocket in my car or something. we're traveling at a pretty good rate, 60 miles an hour on a gravel road. and i heard it again. i was like, something ain't right. >> the next moment, miller realizes shots are being fired. >> shots fired. shots fired. >> copy, shots fired. shots fired. >> i felt one where it went into the engine. it shook my whole car and actually knocked me sideways on the road. i looked down and my temperature gauge is starting to go up on the car. i'm like, oh, boy, they got me. then smoke started coming through the vents and my temperature gauge was way up hot, and i had to stop.

>> meanwhile, police and fbi agents have arrived at the maynard savings bank. they are interviewing the employees about what happened. general police protocol after a bank robbery, regardless of jurisdiction, is that each bank employee must give a statement separately. >> everyone is supposed to write down their own observations before discussing with others. >> this ensures that employees do not compare notes about what happened and are able to maintain their individual perspectives. >> the officers, of course, were here all afternoon. the fbi was here. they were very good at keeping us informed as to what was happening after the suspects left the bank. >> out on the back roads, the thieves are still on the run. department of transportation officer ben driscoll is nearby. sumner police chief dennis cain, a 35-year veteran of law

enforcement, joins driscoll in the pursuit. >> i was coming up to highway 93 by sumner. the police chief, dennis cain, was coming out of sumner with his lights and sirens on. i slowed down, let him make the corner to head south. he made that corner and i was in behind him at that point in time. so, he's the lead in the chase. >> at the next intersection, chief cain overshoots the corner. now driscoll is in the lead. mumford now unloads a barrage of gunfire at officer driscoll. >> shots fired! shots fired! >> it sounded like a rock hit my car. i thought to myself, i'm not close enough to them for that to be a rock. >> moments later a bullet slams through the center of driscoll's windshield just to the right of where his dash cam is pointing. >> it blew out my back window. put shards all over my back

seat. i got scrunched way down behind my dashboard as low as i could get, slammed on my brakes, and i called out over my radio, "shots fired, shots fired, shots fired." >> we have shots fired. got two shots on my vehicle. >> all of a sudden, i see ben's squad car. it was weaving in and out on the gravel like it was out of control. finally, it had come to the right-hand side. as i was passing it, the back windshield was shattered out. and like a dummy, i was thinking, could a rock do that? >> officer cain passes me on the left and i just shake my head, don't go, don't go. takes me a little while to get my nerve back up, but i can't let another officer go into a gunfight without backup. >> the thieves had two ak-47 rifles, a .300 caliber weapon. they also have a .40 caliber handgun and a .22 caliber handgun. for the ak-47s, they use large

drums that hold between 75 and 100 rounds of ammunition. the next series of gunshots strikes with far more accuracy. >> the first one was in the neck. i can still remember. it pushed me up and slammed me back against the seat and i started seeing all these little floating glass fragments in slow motion. everything was slow motion. and i could hear these hard thunks. it must have been the bullets hitting my car. i notice that my thumb was just about blown off. >> as i'm getting closer to him, i see his vehicle come to a stop. he bails out of the car, and then i see him with his left hand holding his neck, and there's blood all over his hand. of course, i slam on the brakes, call over the radio that an officer's been hit. >> officer hit. >> ben pulled up, he come

running up and he said my right side was covered with blood. >> blood dripping from his mouth, bubbling. i had no idea if he would survive. i didn't know. i had never seen anything like that. >> driscoll applies intense pressure to cain's through-and-through shoulder wound. >> i don't remember putting all my body weight on him, but i remember holding tight. i was pressing from the front on the arm, pressing on the back like this as hard as i could to stop that blood flow. because, if you can continue to stop blood flow, it will continue to circulate through his body. i could tell that his mind was still working. he wasn't going into shock. it just confirmed that we were doing the right thing, applying the pressure, having him sit down and relax and just wait. >> are you all right? yeah? >> i talked to god, and i just said, don't let this be my last time, you know, give me the strength to pull through it. >> here's the deal. we got one, one through the neck, one through the shoulder. exit wound back here.

>> one to the neck, one to the shoulder. >> and one through the hand, okay? >> i believe that i used all of my adrenaline on dennis cain. i wasn't stressed emotionally. i had poured all that adrenaline into trying to save denny's life. after the ambulance left i called my wife. she said, "when are you coming home?" i said "as soon as i can get a ride." coming up, the end of the line for the maynard bank robbers. >> there's no doubt in my mind this is going to turn bad for us or them or both.

♪ after being questioned for hours by police, employees at the maynard community savings bank who suffered through a traumatic bank robbery prepare to go home, but they don't want to leave alone. >> every time our door would open -- we have a little squeak in our door -- you would not believe how many heads would turn towards the door every time that door opened. >> that night, nobody really wanted to leave the bank because we felt secure here, and you go outside of the bank and then you just feel vulnerable to everything. and we just kind of all walked out to our cars together and hurried home, because then you would feel safe again.

>> dozens of miles away, the two robbers, 24-year-old jeremiah mumford and 19-year-old william clayton, continue to lead members of law enforcement on a high-speed chase, never slowing down. the two heavily armed bank robbers have unleashed a fusillade of gunfire against police. >> i'm about a quarter of a mile behind, i've got more cops coming. i said, i'm just going to stay with them. so, i'm staying with them, and all of a sudden, a first round came through my windshield. the round went through the windshield, through the dash, splintered, hit my arm, and i just got really small. i just got way down below the steering wheel. and i'm driving and i'm yelling on the radio, "shots fired! shots fired!" >> shots fired! i've been hit. he must got a rifle, man. >> the wound goes through his right arm, but he's still in pursuit. >> i have my rifle out between

the a-pillar and the door. i'm holding the door open with my knee and i'm chasing them driving down the gravel road waiting for a good shot to return fire. >> domino shoots four times, but misses. he turns into the small town of frederika, population 183. >> i pull into frederika and i wasn't feeling good. and a deputy pulls up beside me and i told him to keep going. radio asked me if i wanted an ambulance. i just said to myself, i'm not dying in frederika. nice community, but i'm not dying in frederika. >> domino follows until the thieves bail out of their car into a large area of woods. >> somebody says, who got shot? i said, that was me. kenny howell tears my shirt up and says it's a through and through, you're going to the hospital. >> police surround a 2-square-mile section of the woods. there are several buildings, houses and cabins that must be searched. >> it was tough to hear that building cleared. that building cleared. you kept wanting to say, there they are in custody. that building cleared.

they snuck, they got out. >> we were so close to that community of frederika. we were so concerned that these folks would get into a house or residence where somebody is occupying it and take a hostage and hurt someone. >> waterloo police special task force sharpshooters rob duncan and kai richter are positioned in the southwest corner. they intensely scan the woods. they are waiting for the two bank robbers, jeremiah mumford and william clayton, to try to flee the woods and make an escape. >> something caught my attention off to the left of us. there was two figures. dark clothing. they were kind of hunched down, coming up out of the ditch, and then they turned and headed away from us. >> as the two men wait to make a move, a photographer takes a picture that shows the sharpshooters in the foreground and a police vehicle about a quarter mile away. it seems that everyone is ready

for a fight. >> they already shot at a bunch of officers, already hit two of them. you know, they're armed to the teeth. there's no doubt in my mind this is going to turn -- turn bad for either us or them or both. we all made up our minds, this is the day we were going to get into a shoot-out. >> overhead a police airplane captures these final moments on video using fleer technology that measures heat from a person's body. the camera can actually see in the dark, and it shows the moment that mumford and clayton are finally arrested. >> we approached about this far and we started giving them orders, get your hands up, don't move. as soon as the first words were out and the flashlights came on, their hands came straight up. >> it was quiet and came across we have them apprehended and everybody was like, yes. >> for two minutes, people were like, they got them? they got them? they were asking each other, are you sure? of course, then you hear some of the cheering and now the handshaking. we're like, yeah, they got them.

and then, it was like, alive? yeah, they're all alive. no one is hurt. we're like, oh, thank god. >> mumford and clayton are taken to the bremer county sheriff's station for questioning. over two hours, each of the men confesses to much of what went on that day, including why they chose to rob the maynard community bank. >> why were you at the bank in maynard? >> do you know of any police officers in maynard? >> no. makes sense to me. but there's a lot of small towns in iowa, why maynard? >> far enough away from my home. and you can look up the statistics, financially, for any bank. maynard savings is a very, very successful bank considering the economic hardship. >> okay. >> so, all the pieces put together seemed like a logical choice. i had an ak-47, started with approximately 500 rounds.

>> if it wasn't for me, if jeremiah had had his way, he probably would have shot instead of getting arrested. >> why? >> i don't know. it's just the way he is, i guess. >> while in custody, mumford even draws a map of the bank to tell investigators how he and clayton pulled off the heist. as he's being led to jail, mumford tells reporters exactly how he feels about what he's done. >> do you admit to robbing the bank in maynard? >> it would appear so. >> do you feel bad for what you did? >> no. >> for those who survived this dangerous ordeal, especially the people at the maynard savings bank, it's a memory that will not soon go away. >> we felt violated. we felt very violated. this is our space. you know, we were invaded by nasty people.

you know? i mean, this is our, like, our home. we're here probably as many hours as we are with our families. coming up, two thieves dressed as construction workers terrorize a bank in a hostile takeover robbery. >> men and women woke up just planning to go to the bank, somebody is pulling a gun on them.

it's halloween, october 31st, 2007, in a chicago suburb of palos heights. just 30 miles outside the city, this small town is described as a sleepy bedroom community. but behind the quiet facade, the idyllic suburb is a hotbed of bank robberies. >> within a four-year period, we had 13 bank robberies, which is unheard of for a town our size. there's only about 15,000 people that live in town. >> it still was considered rare when the bank robberies started. and the fact that they were armed robberies i think was a shock to a lot of people that live here, that the guns and weapons were involved. the fact that these robberies began to be more than just one or two happenings. it frightens people. >> it almost started being like a joke. the fbi were saying, you know, you guys get more than chicago do. they knew one was coming and for awhile there you were right

every time. there was always another one right around the corner. >> the tcf bank at the corner of ridgeland avenue doesn't look like the other commercial buildings at this busy intersection. it's a two-story brick structure with colonial columns in front. in a span of four years, this bank has been robbed multiple times, and now it's happening again. two men wearing traffic vests and hard hats enter. they look like construction workers stopping in to deposit a check, but these men are not here for banking business. the guns they carry make that obvious. >> traffic safety vests that the road crews would wear. we've had costumes before, but that was new to us. it just looked like they were coming from a construction site. >> the men begin a takeover-style bank robbery, the most dangerous kind of heist. some bank robberies have a thief handing a note to a teller

demanding money, implying they have a weapon or a bomb. but takeover robbery has criminals demanding that everyone get on the ground. the robbers usually have guns and sometimes fire them. the two men want to intimidate bank employees and patrons. everyone is ordered to the floor. so far, their heist is going as planned. >> they forced everyone to get down on the ground except the teller that they were holding the gun to. and they demanded that they be taken to the back. >> they take a teller and manager to the vault and then have them empty money into a sack. >> the gentleman in the vest takes control of the rest of the employees and the workers and the one customer there. the other gentleman, you see him go past, he goes directly to the vault. he's ordering the manager there into the vault. and you see here, this is where

he actually pushes her to the ground. he checks with the customer that's back here and gets him on the ground. you'll see him walk another employee and force her to the ground. you see he has the gun in his right hand. >> the only chance employees have to stop the robbery in progress is to sound a silent alarm. each teller station has a button underneath its table. and the bank's other desks have remote controls with panic buttons as well. but no bank employee has the chance to push them. >> when you're ordered like that and you have a gun there, they're thinking about their own safety. they did what they were told, and that's what i would expect. >> as quickly as they arrive, the thieves head for the exit and leave. once the employees feel safe, they push the alarm button. police are notified immediately. according to police, several employees are crying, making it difficult for authorities to get

any solid information. for these workers, an average day at the office has turned into a trauma they will never forget. >> somebody comes in like that, pulling a gun on them, demanding money from them, and they're concerned, you know, am i going to see my husband or wife again or am i going to see my children again? >> detectives say these takeover-style robberies are becoming more common. it's because so many people have cell phones that make it easy for anyone caught up in a robbery to call police. to make sure no one gets that chance, robbers are relying on the takeover style of robbery more and more often. witnesses report that the robbers are two black men driving a white pickup truck. employees say the men knew exactly what they were doing. they get away with over $215,000 in cash, a huge sum for any bank robbery. >> this is all done within two minutes.

by the time they walk in door until they walk out of the bank, just under two minutes. so, this has been planned for a while. >> but there's one thing that the thieves don't anticipate. a device called a dye pack is mixed in with the cash taken from the vault. a dye pack is usually found at bottom of a cash drawer. it looks like money and weighs the same. bank robbers in a hurry usually don't notice they are taking it. >> once it goes outside the general vicinity, for example, you could set it up where if it's outside the bank for a certain number of seconds or if it goes beyond a certain number of feet beyond the bank doors, the dye pack will detonate, ruining the money, marking the money, or hopefully even the suspects. there's some burning. it will char the money. definitely a lot of smoke. a lot of dye that goes off. >> the thieves are about to find out what a dye pack can do. as they pull out on to ridgeland avenue, the pack explodes inside their pickup truck. the truck swerves into oncoming traffic.

pink smoke billows out the windows. >> an older woman had called and said she had been cut off by a white pickup truck. there was a cloud of pink mist coming from the car. she wasn't able to help us with the description of the offenders because she couldn't see inside, there was so much dust coming from the dye pack. >> despite the smoke and the explosion of dye in the car, the thieves manage to escape. >> i don't know how they drove after it. i guess when you're panicking and you know that there's going to be police coming after you, you do what you need to do. but we still don't know what they did with the vehicle, whether they were able to get new interior from a junkyard, but they would not be able to be driving around in that car without it being noticeable. >> after that, the robbers are gone. for two years detectives try in vain to hunt them down. >> the bank put a reward out. the fbi also put a reward out. whatever reason it was, whether the disguises were good enough that they weren't recognized or people just chose not to assist us with that, we didn't have a

whole lot of leads to go on. we weren't able to get any dna evidence or fingerprint evidence from the scene, so it was very hard to put a case together. >> investigators hope that some of the currency marked with red dye will turn up, but no marked money is found. without the money or leads, the case grows cold. coming up, just when detectives think the thieves have gotten away with robbery, they strike again. and once again, they hit the same bank. >> and i pulled my vehicle like this and angled it so i had a little bit of shielding in case they came out shooting.

more than two years after thieves dressed as construction workers robbed the tcf bank in palos heights, illinois, it seems the case has grown cold. detectives are trying to track down the more than $200,000 the men made off with in the heist.

they have learned one of the suspect's names but have made no arrests. >> the fbi had worked with an informant that gave us some information that identified one of the defenders as wali ali, one of those responsible for the bank robbery. >> wali ali lives in chicago. despite knowing his name and last known address, police have been unable to locate him. more than two years later, dave delaney is promoted from detective to chief deputy, which means his days investigating the halloween bank robbery in 2007 are about to come to an end. >> it can be very frustrating when you're working on a case, and especially when it's something that high profile. once i knew i was getting promoted and not going to be in the office anymore it really made me want to try and solve that. we had a lot of success with clearing these bank robberies, and for two years, the biggest dollar amount that i've worked with in a bank robbery, i wasn't able to do it. >> but these bank robbers are going to give delaney and the rest of the palos heights police

department another chance. three thieves approach the same tcf bank with their guns concealed. instead of construction worker uniforms, they now wear hooded sweatshirts and ski masks. armed with a shotgun and two handguns, they enter the same door and again threaten the lives of employees and patrons. one man takes a teller to the vault, while the other two stand guard. >> you can see him here. he's going to be entering into the vault with the bank employee. this is the same bank that we had from our bank robbery before, and it turns out to be the same offender. it was february, it was rather cold. they're wearing winter clothes. it didn't draw a lot of attention to themselves when they went in. >> this time they brought a third robber with them, a third suspect. he had a shotgun with them, and two of them were carrying handguns. >> this is one of the offenders.

you can see he's wearing the ski mask, and he's just making sure that everybody that he has laying on the ground here are staying and doing what he has told them to do. he's just waiting for his accomplice to come out of the vault. >> sergeant adam nagy is nearing the end of his shift that day when a call comes in over the raid crow. a manager of the bank is in the parking lot and sees the men enter the building. >> he believed that this was going to result in a robbery, phoned the police while they were in the bank. >> there's a bank robbery at tcf bank in palos heights on 127th street. >> as we were going, the witness was continuing to give information. started out with they were still in the bank. >> three black males, tall, they have ski masks on. >> dispatch sends all available officers to the scene. meanwhile, the thieves point their guns at tellers and order them to the vault, where they load up a bag with over $100,000. this time, they make sure not to take a dye pack. >> by the time the three men

left the bank, the police were already on their way to the scene. >> as we were getting closer to the scene, as i passed through the stop light right up here, they started to say that they had exited the bank. >> looks like they just exited. they're in a gray four-door full-size truck. >> as i approached about where we are now, the witness was saying that they had left. they went northbound on ridgeland, so i knew their car was coming towards me. >> but nagy does not go unnoticed. >> they must have saw me pull a u-turn, because as i pulled the u-turn, they turned into the street i'm going to turn into right now. i knew there was only two exits on ridgeland avenue. so, as i was following their trucks to these roads, i radioed to my backup to close those two exits so they would be trapped in the subdivision here. >> he follows the suspects into a cul-de-sac where he knows there's no way out. he has them cornered, but he also has created a dangerous situation. >> if i'm at 6:00, they were at 12:00, and their car was right in between those two trees, so i could see them and they could

see me. they had stopped at this point. i was by myself, but i knew that the time had come that they were going to have to make a decision what they were going to do. they began pulling around towards me. i thought they would try to go past me, so i kind of pulled like this to block their way out, and then that's when they pulled in the driveway here to your right. when they pulled into this driveway, they just pulled up like they were going to pull into that center garage door, and then i pulled my vehicle like this and angled it so i had a little bit of shielding in case they came out shooting. i then exited, used my door as a shield. >> although more police are on the way, nagy realizes, he's in a real predicament. for the moment, the robbers have a distinct advantage, with more men and more firepower. >> i would say i was here approximately 30 seconds by myself. during those 30 seconds i was giving commands. they weren't paying attention to what i was saying. they weren't complying with my commands, so i had some concerns that the three of them were in the car were having a conversation about what to do next. knowing they were armed and knowing it was three against one, of course, i had concerns that they were planning to come out shooting at me.

>> as more officers arrive, the suspects are outnumbered. there's nowhere for them to run and no chance of winning a gun fight. nagy orders them out of the truck. >> put your hands out, we'll bring them out one at a time starting with the driver so they don't all control the vehicle. give them commands to where they're lying prone, and then we have them covered. once that's handled, then we'll start with the second person and so on. >> dave delaney, the detective who has hunted these men for more than two years, has the pleasure of putting handcuffs on the man he thought he would never catch. >> and as i was walking towards them, i noticed that he looked like the offender from the halloween 2007 bank robbery. so, as i knelt down to handcuff him, i asked, are you waali ali? and he said, "yes, i am." i said, "i've been looking for you for 2 1/2 years," and i placed the handcuffs on him. i was able to walk him back to the squad car then. felt good to know that he was finally in custody

two desperate killers. >> evil cunning and conniving. >> an improbable escape. >> everyone is in awe of what they did. >> a million dollar a day manhunt. >> potential danger to the community could not have been higher. >> and she was the key. she's the prison seam stress who she's she prison seamstress who shocked the country helping to piece together one of the most daring prison breaks of all time. >> i'm not the monster everyone thinks i'm on. >> tonight matt lauer's exclusive interview. why would a law abiding wife and mother help two killers escape.