U.S. paratroopers with Charlie Battery, 3rd Battalion, 321st Field Artillery Regiment, 18th Fires Brigade disassemble and assemble the firing mechanism to an M777 A2 howitzer while performing a functions check, during day two of the 2013 Best of the Best competition at Fort Bragg, N.C., Nov. 13, 2013. The competition featured field artillery paratroopers from across the 82nd Airborne Division.