They mostly knew or learned later that OBL had been dead for more than a decade according to another assassination of the former Pakistani P.M. and GWB stopped looking for. He got Saddam Hussein alive!
Also most likely they were NOT told who they were to kill but hauled off with a wrong guy with no DNA, Photos and “buried” at sea with no witnesses. The Pakistanis at the “compound” said firmly it was not OBL living there!!
Instead of “shooting” him they could as easily have captured him alive, even a more valued trophy for Soetoro than a faked dead body NOBODY have seen!!!
The "doctor who helped us in Pakistan" ended up in prison just like the guy who made "the anti-Islam video". Hmmmmmm. SILENCE!!