U.S. Air Force Col. Brian Duffy, 18th Civil Engineer Group commander, discusses family housing statistics with Assistant Secretary of the Air Force (Manpower & Reserve Affairs) Daniel B. Ginsberg and U.S. Air Force Brig. Gen. Matthew Molloy, 18th Wing commander, on Kadena Air Base, Japan, Nov. 30, 2011. Military family housing belonging to Kadena Air Base is comprised of more than 7,000 units - the largest amount of any base in the Air Force. (U.S. Air Force photo/Staff Sgt. Christopher Hummel/Released)