 A record number of people headed home from their July 4th getaways on planes. CBS's Elise Preston from LAX. Americans are returning home in record numbers. The morning started out with a delay and it just went on and delayed all the way to the end of the day. The TSA expects to screen at least 3 million passengers, the most ever. 23 hours? 23 hours, yes. What concerns do you have for this long travel day? It's just exhausting.