2009 U.S. Air Force Academy graduation
Two Air Force Thunderbirds execute a maneuver over the U.S. Air Force Academy's Falcon Stadium May 27 following the graduation of the Class of 2009. This was the 51st graduating class where 1,046 cadets were commissioned as second lieutenants. Vice President Joe Biden was the commencement speaker. (U.S. Air Force photo/Dennis Rogers)