 The brutal heat wave nearly 150 million Americans under heat alerts coast to coast. Record temperatures Palm Springs hitting 124 degrees. And tonight in New York City, recording its hottest day of the year and news coming in, a bridge here stuck malfunctioning because of the heat. Harrowing moments for passengers on board a United flight leaving Los Angeles. The Boeing 757 losing one of its main landing gear tires. Passengers being told to brace. Brace, brace, brace.