When the events of that night were unfolding, ironically a PDF member from Abbotabad was posting live.
I can recall him saying, that there were explosions and gun fire, then reporting that PAF jets had scrambled and could be heard in the vicinity. An inside source confirmed to me that the F-16s were certainly in the air, while AVM (R) Rashid Latif, during a TV talk show claimed that the PAF was in a position to bring down the US Choppers, but was ordered to stand down.!!
Would dearly love to know, who and for what reason, issued the order. !!