The U.S. Air Force Thunderbirds perform their demonstration on March 2, 2015 with mountains in the background at Nellis Air Force Base, Nev. The aerial maneuver training is in preparation for the commander of Air Combat Command. The Thunderbirds perform their show several times a year at multiple locations across the U.S. The solo pilots integrate their own routines, exhibiting some of the maximum capabilities of the Air Force's premier multi-role fighter jet. (U.S. Air Force photo by Senior Airman Thomas Spangler)