Safeguard Command / MSR Complex sign at southwest corner of the MSR site (1977).

• The MSR Complex was operated by the Army Safeguard Command, Grand Forks, with an authorized strength of 784 personnel. This number consisted of 62 officers, 22 warrant officers, 432 enlisted men, and 168 civilians. Their mission was to "defend the continental United States from a ballistic missile attack; specifically, to establish an area defense for existing retaliatory missile sites."
• A subordinate unit, the Army Surveillance Battalion, Grand Forks, operated the PAR (Perimeter Acquisition Radar).
• Family housing units are in the background; these units were moved to Grand Forks AFB after shutdown of the Safeguard system.
• This sign now hangs in the level one hallway of the PAR building at Cavalier Air Force Station.