Maj. Gen. Frederick “Rick” Martin assumed command of the U.S. Air Force Expeditionary Center during a ceremony Sept. 9, 2013, at the Expeditionary Center, here. General Paul J. Selva, Air Mobility Command commander, Scott Air Force Base, Ill., presided over the event, attended by nearly 200 service members, family members and honored guests from across the joint base. (U.S. Air Force photo by Wayne Russell/Released)