U.S. Army Sgt. 1st Class Tomekia Branch, a distribution platoon sergeant with the 689th Rapid Port Opening Element, plots checkpoint locations during the land navigation portion of the brigade's Best Warrior Competition at Joint Base Langley-Eustis, Va, March 27, 2013. Each participant was tasked to find four unique points, the first with a Defense Advanced GPS Receiver and the final three with a compass. (U.S. Air Force photo by Airman 1st Class R. Alex Durbin/Released)