400th Strategic Missile Squadron (SMS)PEACEKEEPERAir Force Ballistic Missile Challenge Coin

Condition: Used, and in good shape. Vintage, has pinta from age. Please see pictures.

This coin is 1 1/2 inches in diameter with epoxy on both sides.

The 400th Strategic Missile Squadron (400 SMS) is an inactive United States Air Force unit. It was last assigned to the 90th Operations Group , stationed at F.E. Warren AFB , Wyoming.The 400 SMS was equipped with the LGM-118A Peacekeeper Intercontinental ballistic missile (ICBM), with a mission of nuclear deterrence. It was the only operational USAF Peacekeeper ICBM squadron. The squadron was inactivated as part of the phaseout of the Peacekeeper ICBM on 19 September 2005.Intercontinental Ballistic Missile SquadronThe squadron was reactivated on 1 July 1964 as an ICBM squadron assigned to the 90th Missile Wing at Francis E. Warren AFB , Wyoming , and equipped with 50 LGM-30B Minuteman Is in early 1964, then upgraded to LGM-30G Minuteman III in 1973/1974. It received 50 LGM-118A Peacekeeper ICBMs in 1986, the only USAF missile squadron to put them on operational alert. Inactivation of Peacekeepers began in 2001, and the last missile was inactivated in 2005. Squadron inactivation followed on 19 September 2005.LineageConstituted 10th Reconnaissance Squadron (Heavy) on 28 January 1942 Activated on 15 April 1942 Re-designated: 400th Bombardment Squadron (Heavy) on 22 April 1942 Re-designated: 400th Bombardment Squadron, Heavy on 6 March 1944 Inactivated on 27 January 1946 Re-designated 400th Strategic Missile Squadron (ICBM-Minuteman) , and activated, on 10 December 1963 Organized on 1 July 1964 Re-designated 400th Missile Squadron on 1 September 1991 Inactivated 19 September 2005(REF:/wiki/400th_Missile_Squadron