our report tonight from nbc's kevin tibbles in tennessee. >> reporter: you could call them subterranean sounds. ♪ >> reporter: to hear them, one must journey toward the center of the earth. have you ever played music? >> no. >> reporter: this is like majestic. >> this is insane. ♪ >> reporter: once a month visitors to the cumberland caverns hear tunes usually reserved for above ground in nearby nashville. how far does this go back? >> we have 28 miles of mapped caverns. >> reporter: formed by a vast, ancient underground network of rivers. >> all the water rushing through the rock, opening up vast rooms inside the mountain here. >> reporter: just imagine 333 feet 'below the earth's surface and before your eyes, a crystal chandelier and an underground spectacle. ♪ >> reporter: the largest cave provides musicians and 500 listeners with near perfect acoustics. >> it's one of the most special places. it sounds incredible in here. it really does. >> reporter: although some sneak a listen for free. are there bats down here? >> we do have bats. >> reporter: oh. ♪ >> ricky skaggs walked on stage

kevin tibbles, nbc news, shepherdsville, kentucky. >>> back to present day, that's our broadcast on a monday night as we start off a new week. thank you for being here with us. i'm brian williams. we hope to see you right back here tomorrow evening. good night. >>> right now at 6:00, a live look above that fire making a steady march through extremely p of the east bay. good evening, thanks for joining us. >> the mt. diablo fire is burning in contra costa county. people across the bay area are feeling the impact. live look now from our nbc chopper. the wildfire has more than doubled in size since it broke out yesterday, growing to more than 4,000 acres. there are quality, air quality concerns now in this area, stretching from the tri valley down south to santa clara county. nbc has a look at the health impact. chief meteorologist jeff ranieri is watching the winds. we begin with jodi hernandez. >> reporter: raj, this fire has more than tripled in size and it just keeps growing. as you mentioned, you can see the smoky hillside behind me. we've actually been watching lottelot e helicopte

nbc's kevin tibbles reports tonight from st. louis. kevin, good evening. >> reporter: brian, people here in st. louis and across america have opinions about what their country should do. they are mixed and heartfelt. the start of a new day in middle america, st. louis, gateway to the west. and the short-order staff at chili & mac is frying up a frenzy. over eggs and burgers, customers talk politics and syria and the threat of a u.s. attack. >> something should be done, but as far as -- >> reporter: should the united states be the one to do it? >> we're always helping everybody else. >> i think they should send the message what they're doing is wrong to their people. that's why i think they should bomb. >> reporter: you don't want to go. >> no. >> reporter: not even a military strike. >> no. i don't see the end game here. >> reporter: and some in missouri say show me. the president seems to think that mr. assad used chemical weapons. >> he does think that. i've heard him say that. but i don't see any proof. >> everything is looking like

our report tonight from nbc's kevin tibbles at chicagoland speedway. >> reporter: it's fast and loud and wildly popular. but many of nascar's fiercely loyal fans are angry. >> nascar was built, you know, mainly rednecks and integrity and all that. you know, it was just a bunch of bullcrap that happened. >> reporter: he's referring to last week's race in richmond, virginia. in the final moments clint boyer suddenly lost control. >> i bet it's hot in there. >> reporter: some suggest team leaders sent coded radio messages signalling him to do it. teammate brian vickers number 55 was told to make a pit stop. radio communications seem to suggest vicker is confused. >> i don't understand. pit right now? >> reporter: vickers is congratulated when he pits. >> oh, yeah. pit. >> reporter: nascar's governing body has ruled it was done to allow a teammate to move ahead and win a spot in the chase. nascar's playoffs. >> stuff goes on a lot. i think people are more subtle about it. >> reporter: nascar levelled the largest fine in the history of the sport -- $300,000 -- against the michael waltrip

nbc's kevin tibbles with us from downtown chicago. kevin, good evening. >> reporter: brian, tonight as the hour approaches, thousands of americans who work in and out of government are blracing for the consequences of a shutdown. at chicago's federal building today, dozens of government workers gathered to protest a possible shutdown. elizabeth came on her lunch hour. are you worried? >> oh, yeah. yeah. i'm the only breadwinner right now. >> reporter: she works for the epa. a mother and grandmother her husband was laid off. she is frustrated, angry and worried. >> congress need s to be turned over somebody's knee and spanked hard. they are acting like small children. >> reporter: as the business of government is poised to grind to a halt, federal employees across the u.s. head home not knowing what tomorrow brings. >> scary how we are going to pay our bills. >> reporter: it is not just federal workers. maliq sells souvenirs near the statue of liberty. >> if the statue is closed there won't be business here. less tourists. >> reporter:

our report tonight from nbc's kevin tibbles at chicagoland speedway. >> reporter: it's fast and loudnd wildly popular. but many of nascar's fiercely loyal fans are angry. >> nascar was built, you know, mainly rednecks and integrity and all that. you know, it was just a bunch of bullcrap that happened. >> reporter: he's referring to last week in richmond, virginia. in the final moments clinic boyer suddenly lost control. >> i bet it's hot in there. >> reporter: some suggest team leaders sent coded radio messages signalling him to do it. teammate brian vickers number 55 was told to make a pit stop. radio communications seem to suggest vicker is confused. >> i don't understand. pit now? >> reporter: vickers is congratulated when he pits. >> oh, yeah. >> reporter: nascar's governing body has ruled it was done to allow a teammate to move ahead and win a spot in the chase. nascar's playoffs. >> stuff goes on a lot. i think people are more subtle about it. >> reporter: nascar levelled the largest fine in the history of the sport -- $300,000 -- against the michael waltrip racing team and ded

kevin tibbles joins me now. i want to talk about the police response to this because as you know, i lived there for ten years and people are wondering, why can't the police somehow get an upper hand, particularly in areas plagued by gang violence? >> reporter: tamron, first i want to paint you a picture. tom, just spread around here. where am i standing? this sort of situation exists in every community in the nation. it is a playground. there are a couple of kids out here this afternoon with their mom enjoying the late fall weather, enjoying the playground and safety of the playground. tamron, this is where last night 13 people were shot including that 3-year-old boy. in a place like this. the message sent from this jungle gym atmosphere and basketball courts, the message is it's a safe place to come and play. many places in chicago, southwest side, that clearly isn't the case and that's what the police are so upset about. he's absolutely right. the guns being used on the streets here belong on the battlefield.

>> even though canada claims to not know why sergeant tibbles has detained him, he soon let's slip tonother inmate that he does know. >> how do you know it's from compton? because, that's the only thing it could be for. you guys can't save him forever, all right? >> save him from what? >> what do you mean save him from what? don't play dumb. you know what he's doing around here. he's just a snitch, you know [ bleep ]. try to do something, help him get out of some trouble, you know, and he's saying like i did something wrong to him. i didn't never do nothing wrong to him. he had his mom take copies of the money order receipts that he sent me. right? he sent me a money order receipt because i got him out of some trouble. >> i will have to go up front. i will have to write a conduct report for threatening and then take it to the captain's office. the lieutenant will write him up some paperwork, which means he will be on confinement. >> coming up -- >> i'm here to tell you guys i did not do what they're accusing me of doing. >> steven weaver argues his case to get out of ad-seg. >> i didn

. ♪ over again >> reporter: kevin tibbles, nbc news, peoria, illinois. >>> and that's our broadcast forthank you for being with us. i'm natalie morales. brian williams will be back in the chair tomorrow and back in your homes. we hope you've had a great labor day. i'll see you tomorrow on "today." for now, for all of us, good night. >>> nbc bay area news starts now. >>> right now at 6:00, history in the making. we're just a few hours away from the official opening of the new span of the bay bridge. and here are the first cars driving across the bridge moments ago. as you can see, they're a collection of cars popular when the bridge opened in 1936. you can see the brim from above and you can also see some of these classic antique cars going across. and look at the paint on that bridge. it is very clean, very white. not sure how long it's going to stay that way. looking very beautiful as the first folks cross the brand new eastern span of the bay bridge. thank you for joining us on this labor day. >>> a lot of vips, a blowtorch and history. we've been waiting for this for nearly 25 years,

kevin tibbles, nbc news, cumberland caverns, tennessee. >>> that's "nbc nightly news" for this saturdayrk. i'll see you tomorrow morning on "today." then right back here tomorrow evening. then right back here tomorrow evening. good night. -- captions by vitac -- www.vitac.com

kevin tibbles has that story. >> reporter: it's fast and loud and loudly popular. but many of nascar's fiercely loyal fans are angry. >> nascar was built, you know, mainly red-necks and integrity and all that. you know, it was just a bunch of bull crap that happened. >> reporter: he is referring to last week's race in richmond, virginia. in the final moments, driver clint bowyer finally lost control. some suggest team leaders sent coded radio messages signaling him to do it. teammate brian vickers, number 55, was told to make a pit stop. radio communications here seem to suggest that vickers is confused. >> i don't understand. >> reporter: vickers is c congratulated when he pits. nascar's governing body has now ruled it was all done to allow a teammate to move ahead and win a spot in the chase. nascar's playoffs. >> stuff goes on a lot. i think that people are just more subtle about it. >> nascar leveled the largest fine in the history of the sport, $300,000 against the michael waltrip racing team and deducted points from each driver. >> there was no master plan to

kevin tibbles, nbc news, chicago. >>> over in denmark, a new program to promote employee health or sors are allowed to take smoke breaks but it's going to cost them. each cigarette break costs an employee 15 minutes of work time. they either have to stay 15 minutes longer or accept a 15-minute reduction in pay or earned overtime. you're watching msnbc. [ sneezes, coughs ] i've got a big date, but my sinuses are acting up. it's time for advil cold and sinus. [ male announcer ] truth is that won't relieve all your symptoms. new alka seltzer plus-d relieves more sinus symptoms than any other behind the counter liquid gel. oh, what a relief it is. than any other behind the counter liquid gel. make my mark i wawith pride.ork. create moments of value. build character through quality. and earn the right to be called a classic. the lands' end no iron dress shirt. starting at 49 dollars. ♪ ♪ i hope it doesn't take me out before i reach my destiny ♪ >>> talk about pipes. just 15 years old, his name is one you don't want to forget, ahsan's album comes out later this month packed with serious voc

his escort officer, sergeant tibbles came out and investigated. >> when i was walking compton back toened. i'm looking for the guy. short, a white guy with a blue cap on. i am all most sure i know whuch whuch -- know who it is. as soon as i see him i will know exactly who it is. >> come here. why don't we step in the do for a second. >> the inmate is identified as richard canada. his name was on some money order receipts turned in by compton's mother. >> turn around, cuff up. >> for what? >> i said so. >> are you serious? >> yeah, i am serious. turn around and cuff up. let's go. you are going to your cell. >> for what, sergeant. >> you know exactly what. >> no i don't. >> though canada claims to not know why the sergeant detained him. he soon lets slip to another inmate he does know. >> how do you know it's from compton? the only thing it could be to. >> you guys don't save him forever. >> save him from what? >> what do you mean save him from what? don't play dumb you. know what he is doing around here. he is a snitch, you know. [ bleep ], try to do something, try to help him get out

for "today," kevin tibbles, nbc news, west lafayette, indiana. >> do you think kevin tickets is excitedut this idea? >> it's great t. future, get here now. >> exactly. you have as to make them so complicated now. it can't just be your middle name. they make it harder to remember. >> right here at nbc, we have to change it every week. >> do have you that password keeper app? you put all your passwords in. i did. it's terrible, it's not working well. >> well, still ahead at 8:15 the fashion icon that thank you orville and wilbur... ...amelia... neil and buzz: for teaching us that you can't create the future... by clinging to the past. and with that: you're history. instead of looking behind... delta is looking beyond. 80 thousand of us investing billions... in everything from the best experiences below... to the finest comforts above. we're not simply saluting history... we're making it. [ male announcer ] campbell's homestyle soup with farm grown veggies. just like yours. huh. [ male announcer ] and roasted white meat chicken. just like yours. [ male announcer ] you'll think it's homemad

sheesh, i spent my day cleaning and cooking for the tibbles and this is what i find.es you were reading. see? they are scary. my stomach really hurts. grandma thora: chew these and in a little while, you'll feel better. d.w.: you get us lost in the woods then you eat grandma and now you've sold my mary moo cow for some beans! but... but... they're magic beans. that's what i think of your magic beans. whoa! ( loud rumbling ) you better hope there's another toy for me at the top of that thing. ( grunting ) why couldn't i have dreamed an elevator for this thing? ( gasps ) wow! boy, this place is bigger than home hardware heaven. ( goose squawks ) watch it you silly goose. hey, d.w. will love this. ( bellowing ): fee, fi, fo, fum! ( screams ) who are you? i am everything you've ever eaten-- 8½ years of food. and that's my goose. ( footsteps thundering ) i hope this is a dream where i can fly. ( screaming ) ( goose squawks ) ( gasps ): what a cute little goose! d.w., we've got to get out of here! the giant's coming. buster: stand back. i'm also a beanstalk cutter. ( growls

ed tibble, an old friend. i use the old loosely. we worked together a long time ago, probably 30 years ago, for general fom weinstein, one of our men -- tom weinstein, one of our mentors. you know, i never wanted to stay in the military. i thought i'd get out after five years and tom weinstein talked me into staying in. you probably said you maybe stayed six months too long. you know, the discussion that we have today is on bersecurity, but i think upfront i have to talk about media leaks, not because i want to, not because i went and had dental surgery to compare the discussion of media leaks to root canals and having your jaw lifted up, but if we're going to have a serious discussion on cybersecurity, we first have to address media leaks. and we have to get some of the facts out on the table. and i think the first thing that we have to have on the table is our mission is to defend this country and our civil liberties and privacy. n.s.a. and cyber command, that's our mission, and we can't do it without your help and without the too