For safety reasons only 40 people are allowed on the VAB roof for launches because escape from the roof is limited.
Although there are five narrow stairways leading from the roof, one on each side of the building and one in the center at the elevator stairwell, only one stairway — the west stairway — is deemed suitable in the event of a mishap on the launch pad. That is because to escape from the roof NASA policy is for escapees to flee as far away from the launch pad as possible before exiting the roof.
No one has ever had to escape the VAB roof and, with the exception of the Challenger tragedy in 1986, no mishaps ever occurred in launching the space shuttles. Challenger broke up over the Atlantic Ocean with the loss of the entire crew. No one on the ground was injured.
Among the 25 or so news organizations NASA granted VAB roof access for the final historic launch from approximately 3,000 accredited media were the Smithsonian Magazine, the Orlando Sentinel and two video and still photographers from Seine/Harbour® Productions, Studio City, California/The Grove Sun, Grove, Oklahoma — Carol Anne Swagler and Peter Michael Crow.