U.S. Sen. Catherine Cortez Masto, D-Nev., gets a tour on a high ridge line on Yucca Mountain 90 miles northwest of Las Vegas from William Boyle, director of Office of Spent Fuel & Waste Science and Technology in the U.S. Department of Energy’s Office of Nuclear Energy, second from left, Friday, May 31, 2019. At right is her Communications Director Ryan King. Behind Cortez Masto is Steve Frishman, a technical consultant to the state of Nevada. (K.M. Cannon/Las Vegas Review-Journal) @KMCannonPhoto