|Perm ID||Sage ID||JSS ID||Unit||Location||Early
|P-18||Z-18||787||Chandler AFS, MN||FPS-3/-20/-FPS-64; FPS-4; FPS-6; FPS-26; FPS-27||FPS-27; FPS-6; FPS-26||Jun-52||30-Sep-69||Main site no longer extant; all structures have been removed.|
|P-18A||Fairmont, MN **||(FPS-18 planned)||Gap-Filler Annex. ** In original ADC plans, but never was built.|
|P-18B||Beresford, SD **||(FPS-18 planned)||Gap-Filler Annex. ** In original ADC plans, but never was built.|
|P-18C||Algona, IA **||** Gap-Filler Annex. In original ADC plans, but never was built.|
Current Use: Radar site and family-housing area have been demolished. The GATR site is in use as a commercial transmitter facility.
Some photos and documents may be marked with varying degrees of classification, up to SECRET. Data so marked is the way it was delivered from official USAF sources, and have been completely declassified. To the best of our knowledge, no currently classified data is stored on this site.The following site information is available: