U.S. Marine Corps Sgt. Michael Gilio, with India Company, 3rd Battalion, 5th Marine Regiment, Regimental Combat Team 2, prepares to return fire during an engagement with enemy fighters during a security patrol in Sangin, Afghanistan, on Oct. 29, 2010. Marines conducted security patrols to decrease insurgent activity and gain the trust of the Afghan civilians. The battalion was one of the combat elements of Regimental Combat Team 2, whose mission was to conduct counterinsurgency operations with the International Security Assistance Force.