My father was in the pentagon at his office on the 3rd floor, D ring. My mother called him right after the WTC crashes to tell him. He said 20 minutes went by before the plane hit the Pentagon. It took 6 minutes for people to come and announce the evacuation and another 2 minutes before the sirens went off. He stated that they have had errant aircraft fly over the building before, but he thought the explosion was a sonic boom at first. Once out side, people started going down into the Metro to get out but had to go back to the parking lots. He then started asking people if the second plane had come yet and for people to get out of there since there was no second plane yet. He got his ass out of there ASAP on foot. He is safe now, but shaken. He said that they will be going back to work there tomorrow, but he'll go to his civilian office in Crystal City instead. He's a retired Army Col. Too close to home for me.