 According to the National Weather Service, around 134 million people in the U.S. are under some kind of heat alert, with many regions seeing temperatures in the 90s or even the triple digits. Still, travel is expected to hit record levels, with more than 70 million people expected to travel 50 miles or more. One person is dead after exchanging gunfire overnight with law enforcement rangers in Yellowstone National Park. The park says there were no active threats to the public. Wyoming Public Radio's Camilla Kodolsky has more.