Members of the Individual Ready Reserve process with different units during a muster hosted by the 459th Air Refueling Wing at Joint Base Andrews, Md., August 11, 2013. The 512th Airlift Wing is scheduled to host an IRR muster May 17, 2014, on Dover Air Force Base, Del. Musters serve as an opportunity for inactive reserve members to update their personnel and medical records, ensuring full readiness in case of a recall to duty. (U.S. Air Force file photo/ Staff Sgt. Katie Spencer)