sarah dallof is joining us from o'hare international airport. sarah, good morning. >> reporter: good morning, mara. believe it or not, the number of people traveling this year is actually slightly down as compared to last year, but this nasty weather means airports and roads are going to be as crowded as ever. before the crush of holiday travelers has even left home, a wallop of winter weather is causing flight delays and cancellations, stranding passengers and making for dangerous driving conditions. and mother nature isn't done yet. >> and the weather just isn't going to clear out until we get into thursday, and unfortunately, that's after all the major travel is supposed to have already occurred. >> reporter: it will undoubtedly affect the millions of people traveling this holiday. >> headed to wisconsin. >> waterloo, iowa. >> reporter: to celebrate with loved ones. >> family is what it's all about. >> reporter: wednesday and sunday are predicted to be the two busiest travel days of the season, with l.a.x. and chicago o'hare among the nation's

here's nbc's sarah dallof. >> reporter: new photos of terror show passengers huddled together inside a bathroom. an eerily deserted checkpoint. and armed officials. as airport operations returned to normal on sunday, flowers left inside of terminal 3 serve as a solemn reminder of the deadly shooting. 42 of federal criminal complaints, 23-year-old paul ciancia came prepared with an assault rifle. high capacity magazines. a bag of ammunition and a handwritten manifesto. >> we found a statement where we he made a conscious decision to kill multiple tsa employees. >> reporter: as he made his way through the terminal, ciancia reportedly asked some people if they were with tsa. and moved on when they responded no. but at the security checkpoint, he opened fire. tsa officer gerardo hernandez who was about to celebrate his 40th birthday was killed. agents tony grigsby and james speer shown here were both wounded. as was teacher brian ludmer. ciancia made it about 100 yards into the terminal, before police shot him multiple times and took him into custody. officials are waiting to interview h

sarah dallof, thank you very much. >>> now coming up, attention shoppers of the it is time to unite with workers. we will talk to a walmart sales associate about black friday, the creep and workers right all ahead. before using her new bank of america credit card, which rewards her for responsibly managing her card balance. before receiving $25 toward her balance each quarter for making more than her minimum payment on time each month. tracey got the bankamericard better balance rewards credit card, which fits nicely with everything else in life she has to balance. that's the benefit of responsibility. apply online or visit a bank of america near you. medicare open enrollment. of year again. time to compare plans and costs. you don't have to make changes. but it never hurts to see if you can find better coverage, save money, or both. and check out the preventive benefits you get after the health care law. open enrollment ends december 7th. so now's the time. visit medicare.gov or call 1-800-medicare to severe plaque psoriasis... the frustration... covering up. so i talked with my doctor.