be prepared. expect delays. expect cancellations. reporter: the numbers are already huge at, and the world busiest airport got bezier in atlanta. on friday morning tsa screened 31,000 people there. when it s all said and done, it will screen 17.7 million people in total at airports here and across the country that includes next week when everybody begins coming home, the next big test for airlines. victor, amara? pete moneyuntean for us. the very latest delays into and out of the u.s., 581, that number for cancellations so far. we ll continue to keep you updated on the numbers. now let s focus on driving. traffic might be heavy. prices for gas might be a bright