All of the airbases where the US assets are co-hosted are secured by DSG. A while back, Air Commodore Kaiser Tufail had written an article "Jacobabad Tales" which had some really interesting insights about PAF and US personnel dynamics at the airbase. It was worth a read. It is still available in PakDef E-Reporter Volume 1, issue #3 here:
Pakistan Military Consortium :: www.PakDef.info
One other point, GlobalSecurity is nothing credible to quote from. Unfortunately most Pakistanis have no idea about the quality of the stuff at GS and probably get impressed by a simple reference to it.