It's extremely unfair to criticise the time the NSG took to complete the operation. Firstly the 60 hour figure is a misrepresentation of the facts- the last terrorist had been killed many many hours before that but the 60 hour mark was when the NSG has swept all 3 locations throughly and declared them 100% clear (no IEDs, no more terrorists). Leave aside the 10 hours it took to get the NSG to Mumbai (that would not happen again) the task that confronted them was unbelievably massive and unprecedented- 1000s of rooms to be cleared, an unknown number of terrorists etc etc. Many police units around the world admitted they'd have struggled to confront the situation too.