Daniel Zimmer, client systems technician, 913th Force Support Squadron, signs in for the Individual Ready Reserves (IRR) Muster May 5, 2017, at Little Rock Air Force Base, Ark. Zimmer, who was an active duty Airman with the 19th Airlift Wing, now works as a civilian for the 913th Airlift Group and updated his records during the mandatory event. (U.S. Air Force photo by Master Sgt. Jeff Walston/Released)