Master Sgt. Robert W. Grimsley, bottom row left, poses after being awarded the Military Outstanding Volunteer Service Medal April 13, 2011 for his volunteerism and support with the 332nd Expeditionary Medical Group in Iraq. Sergeant Grimsley is the flight chief for the 315th Airlift Wing Security Forces Squadron at Joint Base Charleston, S.C. (U.S. Air Froce Photo by Staff Sgt. Shane Ellis)