U.S. Army Spc. Nashon Richardson, 689th Rapid Port Opening Element cargo specialist, assembles a M2 .50 caliber heavy machine gun during the 597th Transportation Brigade’s annual Best Warrior Competition at Fort Eustis, Va., March 28, 2013. Each participant was required to successfully disassemble and reassemble the weapon as part of the “mystery challenge,” one of 11 events testing each Soldier’s skills. (U.S. Air Force photo by Tech. Sgt. April Wickes/RELEASED)