US Air Force Academy Class of 2015 Graduation May 28, 2015 6016 × 4016 Congrats USAFA class of 2015! The U.S. Air Force Academy Class of 2015 enters Falcon Stadium in Colorado Springs, Colo., May 28, 2015. Over 800 cadets will cross the stage and become the newest second lieutenants in the USAF. (U.S. Air Force photo by Liz Copan/Released)