Afghanistan Oh-Dark-30 Mission June 26, 2013 Share Read Later Marine photo / Sgt. Tammy K. HinelineU.S. Army 1st Lt. Dan Hewing, protective security detail platoon leader with the 307th Engineer Battalion, checks the navigation system in a mine-resistant, ambush-protected vehicle prior to departing on a patrol from Camp Leatherneck in Helmand province, June 24.