Five images found at Corbis. Four from the evening of the 12th.
This one is captioned, "Pentagon After Attack: Night Searches for Survivors," which seems odd with two responders reading the newspaper. Guess there wasn't much business.
One image is dated September 11th, thus placing Mr. Vaughn at a fairly privileged location on 9/11---high on top of something if the angle of the ambulance is any guide.