Security
U.S. Marine Corps Lance Cpl. William Brink a rifleman with Echo company, 2nd Battalion 9th Marines, Regimental Combat Team 7 (RCT) 7, provides security for his teammates during a combat operation in Helmand province, Afghanistan, March 4, 2013.
William deployed to Afghanistan in support of Operation Enduring Freedom. (U.S. Marine Corps photo by Staff Sgt. Ezekiel R. Kitandwe). Original public domain image from Flickr