[TomasUSMC]

I don't know about 9/11 but it is true about the London attack. I heard it live twice on the BBC. They interviewed the gentleman in charge of the drill several times that day.

[japaneseghost]

http://www.prisonplanet.com/articles/july2005/090705bombingexercises.htm

Sounds to me like someone from the 'consulting agency' leaked the exact time of the exercise, and someone from al-quaida was listening.