81st Training Support Squadron hosts technology expo
Mark Umberger, General Dynamics business development manager, provides a demonstration on network-centric training for networks and equipment to Tech Sgt. Doug Dredden, 336th Training Squadron, and Staff Sgt. Vincent Callahan, 81st Training Support Squadron, during a technology expo Jan. 9, 2012, at the Roberts Consolidated Aircraft Maintenance Facility, Keesler Air Force Base, Miss. The 17th annual free expo, hosted by the 81st TRSS, featured more than 40 exhibitors. (U.S. Air Force photo by Kemberly Groue)