posted on Dec, 31 2010 @ 05:09 PM
PS stands for PACER SPRITE, not "Project Site." PACER is an Air Force Materiel Command first word for logistics related programs. The PACER SPRITE
locations were maintenance depots for the F-117A.
Some documents related to PS-22 had a cover sheet with the designation:
SECRET BY ASSOCIATION/SPECIAL ACCESS REQUIRED
It was used exclusively on documents which did not contain classification or control markings, but which were classified SECRET/SAR when specifically
associated with PS-22 activities. When these documents were completely disassociated from PS-22, they were considered UNCLASSIFIED.