U.S. Marine Corps Lance Cpl. Trevor Wiren, a rifleman with 1st Squad, 3rd Platoon, Delta Company, 1st Battalion, 7th Marine Regiment, Regimental Combat Team 6, provides outboard security while on patrol out of Forward Operating Base Tabac in Sangin, Helmand province, Afghanistan, May 25, 2012. Marines conducted the patrol to observe any changes in local atmospherics.