Located adjacent to the missile launcher on the southeast is the 1963 LF support building, which contains an array of mechanical, electrical, and environmental equipment. This box-like underground structure has its roof about one foot above ground level. Constructed entirely of reinforced concrete, the building is rectangular in plan, measuring roughly sixteen feet wide, twenty-five feet long, and eleven feet deep.
The support building contains electrical distribution equipment; a diesel-fueled emergency generator that supplied electrical power when the commercial source was unavailable; a brine chiller unit that provided cold water to the launch equipment room air handler, which in turn, provided the electronic racks and launcher with temperature and humidity-controlled air; a hydraulic pump for the personnel access hatch; a temperature control air compressor; and various panels for mechanical, security, and communications systems.