U.S. Air Force Airman First Class Andrew Dutton, a 509 Aircraft Maintenance Squadron crew chief, marshals a B-2 Spirit down 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., is one of a series of advanced training programs administered by the USAF Warfare Center and executed by the 414th Combat Training Squadron. (U.S. Air Force photo by Tech. Sgt. Miguel Lara III)