U.S. Army 1st Lt. Alex Mumford, a signal officer with the 3rd Brigade Combat Team, 82nd Airborne Division, conducts a radio test following an air-to-ground jump during a joint forcible entry exercise May 31, 2013, at the Nevada Test and Training Range at Nellis Air Force Base, Nev.
SSgt Michael Charles
Taken on 31 May 2013
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