Oklahoma City Air Logistics Complex Commander Brig. Gen. Chris Hill presided over the Change of Command Ceremony for the 76th Commodities Maintenance Group in The Assembly room of Bldg. 9001 July 22. Col. Matthew Lewin assumed command of the group from Col. James Petrick. Lewin will be responsible for more than 2,000 maintenance professionals and 21 major production facilities providing manufacturing, repair, overhaul and testing of more than 75,000 aircraft and missile components. (U.S. Air Force photo/Kelly White)