 Millions of people will be packing the airports today ahead of the 4th of July holiday. The TSA says it expects to screen more than 32 million flyers now through July 8th, and that today will be the peak day for holiday flights with more than 3 million flyers expected. AAA predicts that a record 60 million people will be traveling by car over the holidays, which is nearly 3 million more than last year.