A U.S. Marine with 4th Squad, 3rd Platoon, Delta Company, 1st Battalion, 7th Marine Regiment, Regimental Combat Team 6 scans the area through his rifle combat optic during a patrol out of Forward Operating Base Tabac in Sangin, Helmand province, Afghanistan, May 28, 2012. Marines conducted the patrol to provide security around the region and to observe any changes in the local atmospherics.