Senior Airman Christopher Good replaces a headlight on a vehicle as Senior Airman James Griffin helps hold it in place during the Devil Raid Mobility Exercise competition at Joint Base McGuire-Dix-Lakehurst, N.J., March 31, 2015. The 570th and 571st Contingency Response Groups stationed at Travis Air Force Base, Calif., are both scheduled to conduct their mobility exercise competition April 27. The Airmen are assigned to the 818 Contingency Response Group. (U.S. Air Force photo/Staff Sgt. Gustavo Gonzalez)
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