better reflect the organization of the Air Force as a whole. In 2006, the wings, groups and squadrons were given numbered designations. In 2010, ESC reverted to an organization of program offices and the 38th Engineering Installation Wing (by then a group) was reassigned. New Air Force standards caused the 66th Air Base Wing, because of its size, to be redesignated the 66th Air Base Group. In June 2011, the Air Force Research Laboratory Sensors Directorate moved from Hanscom to Wright-Patterson AFB, Ohio, and the Space Vehicles Directorate moved to Kirtland Air Force Base, New Mexico, closing more than 60 years of laboratory presence on Hanscom. The Electronic Systems Center as an organization was realigned in July 2012, and became a part of the newly created Air Force Life Cycle Management Center at Wright-Patterson AFB, Ohio. Incidents/accidents The B-25 bomber which crashed into the Empire State Building on 28 July 1945, took off from Hanscom. On 8 August 1962, a US Air Force KC-135, a modified former tanker, crashed on approach to runway 11, destroying the aircraft and killing all three members of the flight crew. Previous names Laurence G. Hanscom Field, Boston Auxiliary Airport at Bedford, 26 Jun 1941 Bedford Municipal Airport, 29 Jun 1942 Bedford Army Air Field, 8 Apr 1943 Hanscom Airport, 15 Oct 1947 Bedford Air Field, Mar 1948 Hanscom Field, Jun 1948 Laurence G. Hanscom Field, 24 Dec 1952 Laurence G. Hanscom Air Force Base, 22 Jun 1974-18 January 1977 Major commands to which assigned First Air Force, 2 July 1942 AAF Technical Service Command, 15 October 1944 Re-designated: Air Technical Service Command, 1 July 1945-12 August 1945 Air Defense Command, 1 July 1947 Continental Air Command, 1 December 1948 Air Defense Command, 1 January 1951 Air Research and Development Command, 1 August 1951 Re-designated: Air Force Systems Command, 1 April 1961 Air Force Materiel Command, 1 July 1992–present Note: Station placed on standby status: 1 Jan-to Apr 1944; discontinued, 12 Aug 1945; disposed, 8 Mar 1946; transferred to Commonwealth of Massachusetts, 21 Aug 1946; leased from Commonwealth of Massachusetts to US Government, 1 Jul 1947, flying facilities are property of Commonwealth of Massachusetts with USAF not having exclusive use. Major units assigned 79th Fighter Group, 2 July – 28 September 1942 318th Fighter Squadron, 3 August-3 October 1942 85th Fighter Squadron, 23 June-28 Sep 1942 342d Fighter Squadron, 13 January-28 April 1943 370th Fighter