text:  It's shaping up to be an extremely busy 4th of July travel period. CBS's Errol Barnett 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 4th of July. There were no empty seats on the aircraft. No empty seats. Airplanes would fall. This is CBS News.