Tech. Sgt. Tom Ellsworth, Crew Chief 1, and Master Sgt. Daniel Lawson, Line Chief, stand at attention while Lt. Col. Greg Thomas, leader of the U.S. Air Force Thunderbirds, as he exits his plane during the Joint Service Open House at Andrews Air Force Base, Md., May 15. The three-day air show offers local community members a closer look at the advanced capabilities of the armed forces. (U.S. Air Force photo by Senior Airman Renae Kleckner)