IMHO, the FBI had plants in with the terrorists.
They thought they had it under control. And they didn’t.
They didn’t want to take the blame. End of story.
http://www.foxnews.com/story/0,2933,556186,00.html
Interesting Quote: “”Four cameras in four different locations going blank at basically the same time on the morning of April 19, 1995. There ain't no such thing as a coincidence,” Trentadue said.”
AND
""The interesting thing is they spring back on after 9:02," he said. "The absence of footage from these crucial time intervals is evidence that there is something there that the FBI doesn't want anybody to see.""