 And if you can, stay in the shade, which is easier said than done. It's shaping up to be an extremely busy Fourth of July travel period. CBS's Errol Burnett at Newark Airport. More than 50,000 flights are in the skies. And over the holiday week, the TSA expects to screen more than 32 million people, a 5% increase over last Fourth of July. There were no empty seats on the aircraft. No empty seats. Airplanes would fall. This is CBS News.