The TG-10C glider performs its final aerobatic flight over the U.S. Air Force Academy in Colorado Springs, Colo. Dec 2, 2011. The TG-10Cs are reaching the end of their lifetime hours, and December is the last month of service before they are destroyed. This aircraft has served the Academy and cadet aerobatic demonstrations at football games, parade and airshow aerobatic demonstations since 2003. (Air Force photo/Mike Kaplan)