[3] In normal operation PARCS can spot an object the size of a basketball (24 cm) at 3000 km (2000 miles).

Tests during the 1970s and 1980s showed that with proposed software updates (not carried out) it could spot objects less than 9 cm in size.

[3] The PARCS building includes an underground power plant with five, 16 cylinder dual-fuel (diesel/natural gas) engines manufactured by Cooper Bessemer driving 5 General Electric generators for a total output of 14 megawatts.

[5] The facility was built as one site of the Stanley R. Mickelsen Safeguard Complex for the Safeguard Program's anti-ballistic missile defense, with the PAR providing detection data for computing preliminary trajectories to be provided to the Missile Site Radar[6] (the complex was deactivated in 1976).

[8] Summit Technical Solutions, LLC took over the Operations, Maintenance and Logistics support of the PARCS site in October 2017.