HILL AFB, Utah, Aug. 28 -- The U.S. Air Force Hill Air Force Base (75th Air Base Wing) issued the following news: By Aimee Malone, Air Force Nuclear Weapons Center The Air Force Nuclear Weapons Center is reorganizing its execution directorates to better serve the nuclear enterprise. The Sentinel Systems Directorate and the Minuteman III Systems Directorate merged Aug. 27 to become the Intercontinental Ballistic Missile (ICBM) Systems Directorate. It will be responsible for providing the most  more