Veteran Administration representatives provide benefit information to inactive reserve members during the Individual Ready Reserve (IRR) Muster at Langley Air Force Base, Va., July 29, 2011. Enlisted Airmen of the IRR are bound to service based on their initial enlistment obligation of eight years, regardless of their active duty service tenure, while officers must report until they voluntarily resign their commission.(U.S. Air Force photo by Staff Sgt. Antoinette Gibson/Released)