A B-1B Lancer assigned to the 34th Bomb Squadron, Ellsworth Air Force Base, S.D., taxis to participate in night operations during Red Flag 17-1 on Nellis Air Force Base, Nev., Jan. 25, 2017. Night mission have been integrated into Red Flag to prepare aircrews for missions in low-light environments. (U.S. Air Force photo by Airman 1st Class Kevin Tanenbaum/Released)