The 819th RED HORSE Squadron is a unit of civil engineers based at Malmstrom AFB, Montana, who are responsible for heavy duty repairs around the world. Originally activated at Abilene, Texas, the unit has been active and inactive at several different bases over the last 55 years. The unit was most recently activated as the first ever Air Force-Air National Guard RED HORSE associate unit at Malmstrom, AFB on 1 June 1997.