[1] Picture Archiving Communication Systems

[2] Physics Astronomy Classification Scheme (http://www.aip.org/pacs/pacs.html)

[3] Personal Access Communications System

[4] Picture Archival and Communications System

[5] Particle Analysis Cameras of Shuttle (USAF) (->”NASA Acronym List”)

[6] Payload Access Control System (->”NASA Acronym List”)

[7] Pointing Attitude Control System (->”NASA Acronym List”)

[8] ICAO- Airportcode f. Cape Sarichef Airport (Alaska, USA) see online