tour, the longest in the bomber's 13-year history, also marked the first B-2 deployment since the aircraft was declared fully operational. Lineage Established as 509 Composite Group on 9 December 1944 Activated on 17 December 1944 Redesignated: 509 Bombardment Group, Very Heavy, on 10 July 1946 Redesignated: 509 Bombardment Group, Medium, on 2 July 1948 Inactivated on 16 June 1952 Redesignated 509 Operations Group on 12 March 1993 Activated on 15 July 1993 Assignments Second Air Force, 17 December 1944 315th Bombardment Wing, 18 December 1944 313th Bombardment Wing, c. June 1945 Second Air Force, 10 October 1945 58th Bombardment Wing, 17 January 1946 Fifteenth Air Force, 31 March 1946 Eighth Air Force, 1 November 1946 509th Bombardment Wing, 17 November 1947 – 16 June 1952 509th Bomb Wing, 15 July 1993–present Components 13th Bomb Squadron: 9 September 2005–present 320th Troop Carrier Squadron: 17 December 1944 – 19 August 1946 325th Bomb (later, 325th Weapons) Squadron: 6 January 1998 – 9 September 2005 393d Bombardment (later 393d Bomb) Squadron: 17 December 1944 – 16 June 1952 (detached 17 November 1947 – 14 September 1948 and 1 February 1951 – 16 June 1952); 27 August 1993–present 394th Bombardment (later, 394th Combat Training) Squadron: 6 November 1996 – c. 13 April 2018 509th Air Refueling Squadron: 19 July 1948 – 16 June 1952 (detached 19 July – 14 September 1948 and 1 February 1951 – 16 June 1952) 715th Bombardment Squadron: 6 May 1946 – 16 June 1952 (detached 17 November 1947 – 14 September 1948 and 1 February 1951 – 16 June 1952) 830th Bombardment Squadron: 6 May 1946 – 16 June 1952 (detached 17 November 1947 – 14 September 1948 and 1 February 1951 – 16 June 1952) Stations Wendover Field, Utah, 17 December 1944 – 26 April 1945 North Field, Tinian, Mariana Islands, 29 May – 17 October 1945 Roswell AAFld (later, Walker AFB), New Mexico, 6 November 1945 – 16 June 1952 Pease AFB, New Hampshire, August 1958–1991 Whiteman AFB, Missouri, 15 July 1993–present Aircraft B-29 Superfortress, 1944–1950 C-47 Skytrain, 1944–1945 C-54 Skymaster, 1945–1946 KB-29 Superfortress (Tanker), 1948–1952 B-50 Superfortress, 1949–1952 B-2 Spirit, 1993–present T-38 Talon, 1993–present References Notes Bibliography Bock, Frederick (ed). 509th Composite Group: 50th Anniversary Reunion, Albuquerque NM, 5 August to 10. 1995 (Revised and Corrected Edition 1997). Bowers, Peter M. Boeing B-29 Superfortress. Stillwater, Minnesota: Voyageur Press, 1999. . Campbell, Richard H. The Silverplate