The 490 MS is equipped with the LGM-30G Minuteman III Intercontinental ballistic missile, with a mission of nuclear deterrence.

Air Echelon transferred 1 February 1943 with first combat mission on 18 Feb. Operating under Tenth Air Force for next two years, squadron primarily performed interdiction missions against Japanese lines of communications as well as supporting British ground forces in Burma during 1943 and 1944.

Assumed secondary role of dropping leaflets over Burma for the United States Office of War Information from, January–March 1945.

Reactivated on 1 May 1962 as an ICBM squadron assigned to the 341st Missile Wing at Malmstrom Air Force Base, Montana.

Download coordinates as: 47°30′17″N 111°11′14″W / 47.50472°N 111.18722°W / 47.50472; -111.18722 (Malmstrom AFB) This article incorporates public domain material from the Air Force Historical Research Agency