overwhelming he can't decide what to open first. see you back at 6:00. "nbc nightly news" is next. >> on this saturday night, americans evacuated. the u.s. closes its embassy in libya. details of a dramatic evacuations of americans under heavy military cover and what's behind the move. ceasefire. israel extends a temporary truce in gaza as a staggering number of dead are pulled from the rubble and the world braces for what's next. manhunt. the desperate all out search and big reward for the carjacker who is killed three young children as their mother fights for her life. and not so sweet home. a downside for a wildly popular vacation home rental site. what happens when the guests

won't leave? >> announcer: from nbc world headquarters in new york, this is nbc nightly news with lester holt. >> good evening. with american fighter jets providing cover along with a force of u.s. marines, more than 150 americans were evacuated from libya after heavy fighting in tripoli forced the closure of the u.s. embassy there. libya has been increasingly unstable with rival militias engaged in some of the fiercest fighting of the gadhafi regime today's exodus has large implications which helped topple gadhafi and the threat of the bloody 2012 attack on the american consulate in benghazi. we begin our coverage with white house correspondent kristen welker. >> reporter: the evacuation was necessary to protect the more than 150 americans in tripoli. it's the worst violence in the

area since the revolution in 2011. th u.s. embassy was caught in the middle of intense fighting between the militia causing the americans to be evacuated. john kerry inherits on a diplomatic mission. >> because of the free wheeling militia that is taking place in tripoli, it presents a very real threat. >> it took about hours for a caravan of 158 embassy personnel including 80 heavily armed marine guards to cross into tunisia, about 100 miles away. they left in suvs and buses. the fighter jets and unmanned drones flew over read and a rapid response force was in the air positioning to respond to any threats. once safely in tunisia, they had

a civilian airport. >> they had over 80 marine there is on the ground to defend this particular facility. it's a contrast of the situation in benghazi. there we didn't really have protection for the consulate. >> there was a lack of security and operational failure that attacked there and clinged to with christopher stevens and three other americans. the questions surrounding what triggered the attack became a political crisis for the obama administration and forcing hillary clinton to play defense. >> what are difference at this point does it make whose security has been stepped up in high risk areas? >> the violence now underscores how unstable the region is in the wake of the revolution in the ouster of its long time leader in 2011. >> it's the fall of gadhafi. libya has been dominated not by a central government, but by

competing militias. they are looking to gain power. >> officials said they are not closing the embassy, but rather suspending operations and personnel will return when it's safe. they are coming from elsewhere in the region and here in washington. >> israel tonight said it is extending a temporary ceasefire for 24 hours. it is the war against militants in gaza. as an earlier 12-hour cause of the fighting revealed more death and direction. officials in gaza say over 1,000 people mainly civilians have been killed while 45 have been killed on the israeli side, most of them soldiers. we have the latest on the war from gaza. >> reporter: it lasted for 12 hours, but the short-term truce here in gaza reprieves from the least of war. a war israel said is a must to destroy palestinian rockets and

hamas uses to attack its citizens to many it was a chance to return to their neighborhoods. his home once was, nothing but rubble now. buried beneath is his son. neighbors pulled out their bodies. it was too much for him to watch. toys, clothes, and blankets. the only evidence of what was once people's homes. at the hospital, we found him looking for his son. this 23-year-old wearing a green shirt looking for any relatives from the ceasefire. foreign activists say at that moment the israeli sniper shot and killed him. the israeli military denies it,

saying there is no evidence that supports this authenticity. but the video went viral and his family saw it. that's how they learned of his death. at the morgue, even after a week of decomposing in the sun, he quickly recognized hisson's and that shirt. so he drove by the family home long enough for his mother and sister to see him from a distance, but not to hold. in an open lot, now used for a cemetery, they are burying the stream of bodies brought here. his father packed his son's grave with his bare hands. . >> so many bodies, the graves

only identified by cinder blocks and handwritten names on cardboard. among them, the young men who went back to save lives and ultimate lly lost his own. this evening hamas rejected the ceasefire. a short while ago they fired rockets into israel. the question on the minds of palestinians in gaza, how long will israel restrain itself before it decides to fire back? that has people fearing for the worst. lester? >> from gaza, thank you. with the situation unraveling in libya and still no permanent ceasefire in the gaza complex, the list of headaches facing the obama white house continues to mount. let's go to the correspondent andre mitchell. how is the obama administration juggling all of these crisis? >> reporter: this emergency in

libya is just the latest example of what happened after a dictator is toppled, unleashing more violence and vying for power. in syria, much overlooked. 1700 people died only last week and two years after the president first said assad must go, assad is stronger than ever. the most critical is in gaza. the president is increasingly impatient. this is america's ally. the relationship is becoming frayed. what could end up being the biggest problem of call is vladimir putin and artillery across the border into ukraine. the pentagon and the cia are working on a plan to help the government target rebels's surface to air missiles like the one bringing down the malaysia airliner. >> that's a full plate. thank you. a program note. israeli prime minister benjamin

netanyahu will be david gregory's guest tomorrow morning. the eastern half of the country is on alert for dangerous and destructive weather over the next 36 hours. people are in the path of these storms. kim cunningham is tracking it. >> in the next 36 hours, a lot of you will have the potential for hail again. they are all ready for morning in parts of illinois. this will spread east through indianapolis and probably by 9:00 tonight and heading south into kentucky. this should weaken. damaging wind and even heavy rain with the storms. tomorrow we watch another strong disturbance moving east and as it does, they ought to see more

storms and moisture and this will mean severe weather and now we will go to the east coast. new york city and boston continues on monday's route. that's what's going on the next couple of days. here was a scene in the phoenix area as a massive dust storm caused a temporary halt of flights to the phoenix airport and knocked out power and reduced visibility in spots to zero. a big manhunt is under way in philadelphia for two carjacker who is stole a woman's car and crashed into a crowd on a street corner that killed three children. tonight his mother is fighting for her life. >> in philadelphia tonight, a memorial with the young lives lot of. >> that's my son. you took him away from me. >> a little boy like 7 or 8. i can't even begin to describe

what i saw. >> the little boys, 7-year-old terrence moore and his 10-year-old brother, thomas reid and 15-year-old sister were killed when two carjackers lot of control of the stolen suv and plowed through a crowded street corner. their 34-year-old mother is in critical condition, clippinging to in a philadelphia hospital. >> the children were like her pride and joy. wherever she went, those kids were there with her. >> the family were together selling fruit for the church. a fund-raiser to build a new playground. >> the saddest thing i have come across. >> how can you live with the idea that you just hit somebody and ran. >> the manhunt increases as police comb the crash site. >> the two suspects are described as one black male and one hispanic male. both in their 20s.

>> the two fled on foot and at least is armed. they are reviewing surveillance and offering $110,000 reward for information leading to an arrest. >> all i can say is if you know the person who did this, you have to look yourself in mirror and say do the right thing and turn these folks in. >> a search for suspects and answers as the community comes to grips with unspeakable tragedy. nbc news. >> we have been hearing a great deal about the immigration crisis in the country from the wave of children entering the country from central america to the political story in washington. we take to south texas where mark potter spent time this week with those on the frontlines of a border war. >> on rio grand they are smuggling people to the u.s. from mexico. no one is closer to the action and its many dangers than the game warden from texas parks and wildlife who patrol the

shallowest stretches in small boats. late in the afternoon, a three-man team. caught swiming for the u.s. riverbank to the other side. they have seen him before and suspect he's involved in migrant smuggling. with his family screaming at the agents from the mexican side, he denies being a smuggler saying he was only out for a swim, wearing jeans and shoes. they hand him over to an agent who take him away for processing. catching a smuggler is a rare event given how fast they can cross the river or hide in the underbrush. >> anybody can hide there. you can hide an airplane there and not know it's there. it's that thick. >> the game warden rides the river day and night and when it gets slow, they have to change tactics. >> they are hiding in a spot

with the downed trees waiting for people on that side. >> many times there is lots of activities and when they return to where they pick up the 16-year-old. they have rocks thrown at them from the mexican riverbank. many smugglers are aggressive. >> how hard will they fight to protect their load? >> to death. that's why it's so dangerous. >> keeping an eye, taking a risk on america's frontlines. mark potter, nbc news, mission, texas. >> when nbc nightly news continues on this saturday, renting out your home online to travelers. what happens if a guest refuses to move out. later, the project ended up changing one boy's life.

. >> as with many parts of our lives, the internet and the new sharing economy revolutionized

the idea of home away from home. explosive growth with travelers looking to rent a room, but they are growing painsas we hear from nbc. >> for $65 a night you can rend a room in this portland, oregon house. >> here's the room. >> she uses air b and b which connects travelers with those looking to rent out rooms or homes. >> there has not been one bad experience. >> air b and b screens the hosts and guests, but on occasion there problems. they reimbursed a washington man after renters trashed his house. in palm springs, this landlord rented her condo to a man for 44 days and now said he is squatting. she shared her story to business insider. >> it was extremely frustrating. we couldn't get him out and they said listen, you need to lawyer

up. >> the rental was longer than 30 days, she considered a tenant and must be evicted that takes time and money. they said they paid the full cost of the reservation and is offering legal support. more than 17 million guest had a positive experience and as the business grows in popularity, cities are figuring out how to regulate. the legal battle ground is new york city that has an illegal hotel law that keep it to less than 30 days and they plan to enforce it. >> you can't find it any other way. >> in response, they launched an ad campaign if they push to change new york's law. >> benefits to the community and regulators need to find ways to make it work rather than trying to put it into the box of when would work for a hotel. >> portland worked out a deal and pass rules that regulate and tax the short-term rentals.

>> the economy is changing and you can't keep up with it. >> that's fine with linda. her room is booked nearly seven nights a week. nbc news, los angeles. >> when we come back, why thousands of employees of a super market are protesting leaving dozens of grocery store shelves bare.

. >> a highly unusual food fight where the future of a popular grocery store chain is in jeopardy. the future is in their hands because they want their beloved boss back. >> the ceo is taking home 331

times the average american worker. thens of grocery store employees risking their livelihood protesting the return of their boss, a regular guy who s tended their weddings and looked out for them. >> it's family. >> arthur is a member of the family that owns the market basket super market chain, 25,000 employees strong was fired last month in a board room battle with his cousin. >> his interest kept behind closed doors. >> in this food fight, they are both great. and then the lack of interest in a business on the other one. either one of the guys is there. >> the family feud is decades old hitting artie key against

his cousin. the latest triggered when one of the remaining seven shareholders, all family members were to leave a year ago. after 41 years with the company, tom said he was fired for supporting a week long uprising that left stores empty. a $4 billion company. >> that let my family down. i said if i lose my job, i lose my job. that man has done so much for us. i will give back. >> they built the market basket by offering low prices. it it also built strong relationships. these are not just employees out there. these are customers as well. >> i'm so sick of this. >> a bottom line crisis. nbc news, massachusetts. >> up next here tonight, one boy's new outlook on life thanks to the student who found a way to make a difference.

>> finally tonight, going out and getting a bionic arm is not the easiest thing in the world especially if money is an issue. this is a challenge for families who wanted to help their young son and couldn't find a way until a group of college students got involved. how they made a difference. >> this one is a clear one. >> 6-year-old alex was born this way.

his parents say he was always surprised at what he could do. but if he could get a prosthetic right arm with a hand, he could do so much more. insurance wouldn't cover it so they tried to build him a new arm with a kit they found on the internet. >> i was thinking he was going to put it up something like that. he was going to have a tiny arm. >> frustrated with what looked like a toy, his mother wrote around e-mail, need a brilliant mind. she found just that with engineering students at the university of central florida. together using their newly learned skills and a 3d printer. in six weeks, they had something just for alex. for a dad and son now playing ball together. >> i'm so happy. >> did you ever think you would play ball with your son like

this? >> not like this, no. >> for a mother what she never had until now. >> the first time he gave me a hug. that's something you never think would happen. >> this team being able to help someone, it's like holding had. >> $350 to make this arm, this could be a million business. instead they are taking the plans and putting them on the internet for everyone. for the engineering students, an early lesson. how their can have impact. remember at 6 years old, there some things that are even more important. >> are you happy? >> yeah. so happy i can pick up. >> and alex with his new arm is just that. kerry sanders, nbc news, orlando. >> that's nbc nightly news for this saturday. i'm lester holt reporting from new york. i will see you tomorrow

afternoon and right back here tomorrow evening. good night. firefighters in the south bay battled this stubborn warehouse fire. good evening to you. thank you for joining us.

i'm peggy bunker. terry mcsweeney is off tonight. investigators are trying to figure out exactly what sparked that huge warehouse fire in the south bay. one man was rushed to the hospital as a result. it started early this morning on 7th street in downtown san jose. this is near spartan stadium in the downtown area. nbc's derek shore is live at the scene with new details. looks like we will get some of that information in from derek in a moment. let's give you the background here. this happened at an industrial complex. we'll get the latest from him in a moment. fire officials say the first call came in early this morning reporting th another fire crew on a medical call saw the smoke. flames could be seen shooting up filling up the dark sky. this was a five-alarm fire. it was a bit before 4:00 this morning. it burned for hours. first responders found a man suffering from critical injuries at the scene. he then went to the hospital. he's thought to be an employee at one of the four businesses in that area.