Bobby Beer

A mysterious man, who is initially assumed to be working for the military, assists firefighters involved in the Pentagon recovery efforts, but then disappears without trace and is thought to have been an impostor who had managed to slip inside the Pentagon grounds.
“Johnny” – Arlington firefighter Bob Gray is introduced by his colleague Bobby Beer to a man wearing a hard hat. Beer introduces the man only as “Johnny,” and adds, “He’s our go-between with PenRen [the Pentagon Renovation Program], and he knows some of the military guys too.” Although “Johnny” is not wearing any identifying badge or ID, he seems knowledgeable, appears “taut and serious, with a purposeful military stance,” and even introduces Gray and Beer to a couple of friends of his who say they work for Special Forces. Johnny says if Gray and Beer need anything from the military, he can help. As a security perimeter has now been set up around the crash site, Gray assumes Johnny must be there officially. [Creed and Newman, 2008, pp. 367-368]
Disappears – Johnny turns out to be very helpful and assists Gray and Beer repeatedly. But, on the evening of September 14, he suddenly disappears. Gray and Beer ask around, but no one at the Pentagon seems to know exactly who Johnny is or what his last name is, and none of the agencies involved in the recovery effort say he worked for them. Johnny’s disappearance appears to follow an error he had made after firefighters discovered two bodies inside the Pentagon’s E Ring. Johnny mistakenly called the truck used to remove bodies to the temporary morgue prematurely, before FBI agents had the chance to photograph and document the remains. Gray and Beer start to wonder if Johnny in fact had no official standing, and was an impostor.
Clearance – According to authors Patrick Creed and Rick Newman, “It wasn’t unusual at high-profile crime scenes for law-enforcement pretenders to show up and insinuate themselves into the work.” Johnny would have required “some kind of clearance to get through the concentric security perimeters that sprung up around the building—unless he’d been inside the wire before security tightened. It was possible that he had wandered in at the very beginning and simply stayed—there was enough food, water, and basic support on the scene to survive for days. Somebody who was determined enough to sleep inside one of the tents, or even on the grass, could easily have bypassed security.”
Tighter Security – However, the FBI has now become stricter about security, and is ushering out volunteers and scrutinizing anyone without airtight credentials. Gray and Beer conclude that Johnny may have come to the attention of the FBI when he called the body truck, leading agents to inquire who he was, and this could have prompted his disappearance from the Pentagon. [Creed and Newman, 2008, pp. 416-418]