400th Strategic Missile Squadron (SMS)PEACEKEEPERAir Force Ballistic Missile Challenge Coin Medallion/Token The original Marines picked to

The original Marines picked to form the detachment were hand-picked from over 500 personnel records

Winter awarded Chief Warrant Officer Mark Bierce

It is  1 3/4 inches wide by 2 inches high with epoxy on both sides

This coin is 1 1/8 inches wide by 2 inches high

400th Strategic Missile Squadron (SMS)PEACEKEEPERAir Force Ballistic Missile Challenge Coin Medallion/Token The original Marines picked toCondition: 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