 That's ABC's Victor Okendo reporting in Houston. Speaking of the heat, Las Vegas is expected to hit a fifth consecutive day of temperatures of 115 degrees. Meteorologist with the National Weather Service there says Las Vegas is experiencing its most extreme heat wave in the history of record keeping there. More than 161 million people across the U.S. are under various heat alerts on Tuesday, especially out west. The heat is suspected to have caused six deaths in Oregon.