A B-2A Spirit assigned to the 393rd Bomb Squadron, Whiteman Air Force Base, Mo., lands after a training mission during Red Flag 15-1 at Nellis Air Force Base, Nev., Feb. 6, 2015. Red Flag is an exercise hosted at Nellis AFB that provides aircrews an opportunity to experience realistic, stressful combat situations in a controlled environment to increase mission capability. (U.S. Air Force photo by Senior Airman Thomas Spangler)