A U.S. Air Force B-2 Spirit sits on the flightline at Whiteman Air Force Base, Mo., Feb. 2, 2016, prior to take off during Red Flag (RF) 16-1. RF, located at Nellis AFB, Nev., began in 1975 as an aerial combat exercise but has evolved to include warfighting across air, space and cyberspace domains. (U.S. Air Force photo by Tech. Sgt. Miguel Lara III)