that hersh makes, again, based in large part on this one unnamed source is that when the united states figured it out, he is saying through the walk-in asset which nbc news is also saying the pakistanis then cooperated. this is according to hersh, and that they basically allowed the united states to kill osama bin laden. let me play for you again how hersh makes that argument. >> 24 25 guys go in to the middle of pakistan take out a guy with no air coverage, no protection no security, no trouble. are you kidding me? >> a lot of people watching might have the same reaction. when you take a step back you say yeah, are you kidding me? >> asking the question i think is certainly meaningless as far as coming to a conclusion as to what occurred. i think certainly anyone who looks at the situation can wonder to what extent the pakistanis may have been aware of osama bin laden's location or aware of the united states' operation. but the reality is in the end this was a u.s. operation.