a lockdown in brussels and looming questions at home. what's next in the paris investigation and the broader fight against isis? plus, what will the holiday travel week bring? several air scares already. chicago is on edge just before the release of a video showing a deadly shooting by police. in california the focus is the approaching el nino. what could be the strongest on record. and these boots are made for duck walking. and demand is suddenly washing out supplies. >> we're doing everything we can do to build boots. we build them one pair at a time. >> announcer: this is the "cbs overnight news." welcome to the overnight news. i'm jeff glor. president obama is back in washington following a nine-day

quickly moved to terrorism. before leaving malaysia the president promised that he would destroy isis. but on sunday the top democrats on the senate intelligence committee told cbs news the president's plan is not sufficient. this as the capital of belgium, brussels, remains on lockdown. the investigation in paris continues. and as americans enter one of the busiest travel weeks of the year. according to a new poll, 83% of registered voters believe a large-scale terror attack in the u.s. is likely in the near future. we have reports from paris, new york, and washington. but we start with debora patta in brussels. one of several cities where police conducted raids on sunday. >> reporter: brussels remains a city in lockdown tonight with several police operations under way as the threat alert remains at its highest level for the country's capital. the metro is still not open, and tomorrow the security measures will become even more drastic for the unprecedented closure of the capital schools.

held in the city earlier. belgium's prime minister, jean michel, stressed the threat of an attack remains serious and imminent. "we are worried about an attack like those in paris with several individuals," he said. "possibly targeting commercial centers, streets, or public transport." still at large is salah abdeslam, europe's most wanted man and a prime suspect in the paris attacks. authorities believe he might be destination. but police have their hands full as they are also hunting for several more men in connection with this latest terror threat against brussels. abdeslam's brother, mohammed, made another appeal on local television today for him to turn himself over to police. "we'd rather see salah in jail," he said, "than in a cemetery." while belgian police widen their

security net, the first images saint-denis last wednesday have emerged. the shootout lasted seven hours, and more than 5,000 bullets were fired. [ gunfire ] when it was over, three people had been killed, including the suspected ringleader of the paris attacks, and eight more had been arrested. brussels is certainly a lot more tense tonight. security forces patrolling the and not far from here a number of police operations are under way. in fact, one is just finished here on the square. but police have urged both the media and the public to stop reporting their movements on social media as this could compromise their security. jeff? >> debora patta in brussels. debora, thank you very much. here in the u.s. it is one of if not the biggest travel week of the year, and there have already been scares.

city. >> reporter: 46 million will travel this weekend and they will see extra officers at virtually every airport, train station, and destination in the country. homeland security secretary jeh johnson says his agency is ready for anything. >> i always hesitate to rank threats, but the potential copycat, the lone wolf actor is one that we're continually focused on. >> reporter: lines at the airports will be longer and slower. the tsa says it will handle 25 million passengers this week with enhanced screenings. new york passenger sherry tropan left for miami today. >> we're all a little bit more aware of the increased security now and that people may be a little more nervous. >> reporter: if travelers are nervous, so are the airlines. just this week southwest delayed or diverted three flights. in two cases passengers were afraid when fellow flyers spoke arabic.

today three passengers said to be acting suspiciously on a flight from indianapolis to los angeles forced a diversion to kansas city. phony bomb threats redirected three flights this week from the u.s. headed overseas, including a turkish airlines flight to istanbul this morning. today in new york city police held a three-hour active shooter drill in the city's subway system. for the first time their drill included an attacker in a suicide vest. >> we have now beefed up our resources that we're in a position to handle a significant number of events going on simultaneously or sequentially. >> reporter: the department of homeland security says there are no credible threats anywhere in the u.s. >> we urge you to continue to travel. go to public events. go to public places. and know that our folks are on the job. >> reporter: extra security measures are also in place for overseas flights headed into the united states. jeff? >> jamie, thank you very much.

concerns about terrorism are also playing out in the presidential campaign. a new cbs news poll shows about 40% of republicans in early voting states say their choice of a candidate was at least somewhat influenced by the paris attacks. in all three states, iowa, new hampshire, and south carolina, donald trump has a commanding lead. here's julianna goldman. >> reporter: with national security concerns rising, donald trump leads the republican pack. retired neurosurgeon ben carson is slipping. and senators ted cruz and marco rubio are gaining ground. >> i'm leading every poll by a lot. it's not even a little bit anymore. >> reporter: in the wake of the paris attacks, at least 2/3 of republican voters in the three early contests say a candidate must agree with them on how to handle isis in order to get their vote. and overwhelming majorities favor sending u.s. ground troops to the middle east to fight the terrorist group. today trump built on his controversial policy

resume waterboarding, create a watch list for refugees, and monitor mosques. >> i think waterboarding is peanuts compared to what they do to us. >> reporter: in another new poll, 25% of new hampshire primary voters say trump is best equipped to handle the u.s. response to isis. rubio lags behind with 13%. >> what happened in paris could happen here. >> reporter: the florida senator said his campaign was using the issue for its first campaign ad. >> i obviously am not happy about the events that happened last week in paris, but i think it's a positive development that it suddenly has cast -- forced americans to confront more carefully the issue of national security. >> reporter: the rise of rubio and cruz has come at the expense of ben carson, whose campaign admits the retired neurosurgeon has been hurt by the focus on national security. >> who's got the most experience? i don't know that it necessarily comes down to politics. it comes down to practical experience. >> reporter: to burnish his foreign policy credentials carson's campaign is considering a foreign trip ahead of iwa,

jeff, a campaign official says french president francois hollande is visiting several world leaders this week, including president obama at the white house on tuesday. back in paris, a return to normalcy has been elusive. elizabeth palmer is there. >> reporter: if you're young enough, paris feels as enchanted as ever. the big department stores have decked out their windows, and a christmas market stretches down closed for four days right after the attacks, the stall oers now they're open again, says marg salo, are slow. there are not as many le lking?

>> many people walking, yes. but so many people walking here and so many people don't pay. >> reporter: nobody's spending the way they usually do. >> very difficult. >> reporter: business is down all over. by a third in the restaurants and cafes. and the chamber of commerce says hotel revenues are down by half, as tourists cancel their plans. lily carvallo and ken eisner bucked the trend. but. >> there is like a black cloud around it. >> reporter: reinforced by the sight of heavily armed soldiers all over the city. >> this constant awareness that you don't know what is going to be hit next or it will, or if there is any place safe. >> reporter: since the attacks the french have rallied around national symbols. and that's been good news for the cogniaume family who make flags in what's not normally a flag-waving country says enzo.

on yourself or in your house, it's an act of patriotism. >> reporter: and a declaration that terrorism will not defeat the values of the french republic. of course economies do bounce back after terrorist attacks. but in this case this is the second one in less than a year. has warned that there may be more of them. >> liz palmer, thank you. the security team for pope francis nearly doubled in size last week just before his visit to africa, which begins wednesday. and as allen pizzey reports, the extra security was evident today at the vatican. >> reporter: the ramped-up security was in place long before the faithful even began to arrive. armed police from italy's numerous forces were on every corner. everyone who arrived for the pope's weekly angeles was checked, bags opened, random pat-downs. and that was just to get into the street in front of st. peter's basilica. the line stretched for several blocks for those wanting to

that involved another layer including metal detectors. the security wasn't just a reaction to the paris attacks. some months ago the cover of the isis online magazine had a photoshop of their flag flying from the obelisk in the center of the square. the implied threat didn't worry ernest and joanne morelli from however. >> we feel like the carabinieri are doing a pretty good job. they're all over the place. we don't feel as if anything could happen at this point. i mean, obviously it always could. but we feel fairly safe. >> reporter: pope francis is known to be indifferent to his own security. but aides say he is deeply concerned for those who flock to see him. the only way to ensure complete security in a place like this is to stop the terrorists well before they reach the target. but as both sides know only too well, the police have to get it right every time. the terrorists only have to get lucky once. allen pizzey, cbs news, rome.

edge just before the release of a video showing a white police officer shooting and killing a black teen. jericka duncan has more on this. >> reporter: 17-year-old laquan mcdonald was shot 16 times in october of last year. his family's attorney, jeff meslin, has seen the police dash cam video. >> first shot or two seemed to spin him to the ground. he falls down. he's down on the ground. and then for the next 30 seconds or so in this video the officer just continues to shoot. >> reporter: a judge ordered the video be made public by wednesday after the city rejected several freedom of information requests. police superintendent gary mccarthy says they are prepared for possible violent protests. >> we will facilitate people's first amendment right to free speech. we will facilitate protest, quite frankly. but we will be intolerant of criminal behavior. >> reporter: community activists are calling for calm. but reverend jesse jackson acknowledges people are frustrated.

are angry. most are angry. the question becomes when will the cup runneth over? >> reporter: the night mcdonald was shot authorities say he had a four-inch folding knife and pcp in his system. officer jason van dyke's attorney dan herbert says mcdonald's behavior was erratic. >> he firmly believed he was in fear for his life and he was concerned about the life of his fellow officers. >> reporter: the mcdonald family reached a $5 million settlement. jeff, the attorneys for the mcdonalds say the family has no interest in seeing that dash cam video. >> jericka duncan, thank you very much. still ahead here, police identify a suspect after a stunning shooting of a medical student in new orleans. and the growing threat of the approaching el nino. the "cbs overnight news" will be right back. so i switched to tide pods. they're super concentrated so i get a better clean. 15% cleaning ingredients

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in southern california this weekend it still feels like summer, with temps in the mid 80s in l.a. but that may not be true for long as the focus turns to winter and what could be an historic el nino. here's ben tracy. >> reporter: it's already a winter wonderland in california's mountains, and they're expecting a lot more snow. scientists say a massive el nino in the pacific is still getting stronger. these warm ocean waters near the equator forced the jet stream

that usually dumps rain on central america north, bringing a conveyor belt of storms to california and the southern u.s. >> this current el nino has now surpassed the 1997-98 el nino, which was the biggest on record. so it's huge. >> reporter: josh willis is a climate scientist with nasa. he says el ninos typically impact southern california. but this one is so big it will hit the entire state. why is it important that a lot of these storms hit northern california? >> our water supply is tied to northern california, and it's been in a drought for more than a decade. >> reporter: california's largest reservoirs are in are at historic lows. but el nino comes at a cost. those storms in the winter of '97-98 caused half a billion dollars in damage and killed 17 people in california. still, after four years of intense drought, the state needs all the rain and snow it can

los angeles. police in new orleans tonight are looking for a suspect following a dramatic shooting. surveillance footage shows the victim, peter gold, a tulane medical student, being shot as he tried to stop a gunman who was dragging a woman into an suv. the suspect tried to shoot gold again in the head, but the gun jammed. gold is expected to survive. the suspect is 21-year-old euric cain, whose criminal record includes weapons charges. up next, the boots that are

big-time. winter weather means a busy time for fashion brands, always trying to stay ahead of the latest trend. but as one old school retailer

best way to keep current is to remain the same. here's don dahler. >> reporter: they're rubber-bottomed, terminally unsexy, and virtually unchanged for over 100 years. and yet, l.l. bean cannot make its signature duck boot fast enough. >> we've hired well over 100 people and are in various stages of training. >> hey, bobby. >> reporter: according to manufacturing chief royce haines, back orders are reaching 60,000. >> we're doing everything we can do to build boots. we build them one pair at a time. >> reporter: the reason for the rush is a mystery. inexplicably, the boots have hit the catwalk and have been spotted on the fashionable feet of actress kerry washington. duck boots have inspired designer tommy hilfiger. and kanye west recently launched his yeezy duck boot. all that buzz has not hurt bean. sales have tripled in three

years and are projected to hit half a million this year. and now women have surpassed men as the primary customers. >> it's a trend. it's a fashion thing. it's a desire. you're asking me to figure out why a woman does what she does. it's the wrong question to ask. >> reporter: the bean boot was the very first product designed in 1912 by outdoorsman leon leonwood bean. >> and he came back from a hunting trip with wet soggy feet wearing footwear that was available, most likely all leather. >> reporter: bean came one his shoe with a rubber bottom creating the classic bean boot, still sold today. tricked out a bit for new customers, but traditional tan and brown for the diehard fans. >> i've heard it said that the boot is like an old friend. those that have bought boots, we see boots that are 30, 40 years old and they send them back to nt to get rid of them. >> reporter: with three shifts and re workes hand-producing 50,000 pas moanbracd fothe

holiday rush. don dahler, cbs news, new yo

clowns learn the tricks of the we close tonight inside a class for clowns, where for the macy's thanksgiving day parade. here's contessa brewer. fun and games. >> whoo! >> reporter: even for a bunch of clowns.

lessons. >> one, two, three. >>te a res to follow. no cell phones, no smoking, no inking. >> drinking drinking. >> you mean wate >> you mentioned going to the bathroom? at's notasy. >> reporte karen mtyar a tr pssiofel with the big ape circw irk. as a professor she's seen a lot of freshman jitters. >> a lot of times they're imagining being in front of that many people. >> reporter: but they get over it fast. and if you think it's crazy to get a whip/nae nae lesson in a lecture hall, wait till you get a load of the lab. >> whoever has an itch turn to someone in the audience. >> reporter: in class it's all about funny business. >> as you're walking away look over your shoulder. you'll see people scratching. >> reporter: where assignments for the thanksgiving day parade include pinwheeling, interpretive dance, and of course horsing around. >> to be a clown is to be as human as possible and to project that. exaggeratedly human. >> i'm going to do a swoosh

motion. >> reporter: at clown u you don't have to be born a clown. you can learn it. like returning volunteer john plotsky. >> do you remember the lessons when you're actually out there on the parade route? >> yeah. it helps. it gets you focused as a team and a group and gets in the spirit of the holiday. >> reporter: this may be the only school where landing at the top of the class is a piece of cake. contessa brewer, cbs news, new york. that is the overnight news for this monday. for some of you the news continues. for others check back with us a little later for the morning news and "cbs this morning."