The U.S. Army Golden Knights perform for the crowd during the 2011 Joint Service Open House at Joint Base Andrews, Md. May 20. JSOH affords the public an opportunity to meet the men and women of the Armed Forces and view military equipment from the Navy, Marines, Army, Air Force, and Coast Guard up close. (U.S. Air Force photo by Senior Airman Perry Aston)

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Photo by: Senior Airmen Perry Aston Released |  VIRIN: 110520-F-MG591-011.JPG