National Reconnaissance Office (NRO) which is staffed by military and CIA personnel, and is in charge of most American spy satellites, was running a drill for the scenario of an errant aircraft crashing into its headquarters.

On the morning of September 11th 2001, Mr. Fulton and his team at the CIA were running a pre-planned simulation to explore the emergency response issues that would be created if a plane were to strike a building.
http://www.thememoryhole.org/911/cia-simulation.htm

back at cha

On the morning of September 11th 2001, Mr. Fulton and his team at the CIA were running a pre-planned simulation to explore the emergency response issues that would be created if a plane were to strike a building. Little did they know that the scenario would come true in a dramatic way that day. Information is the most powerful tool available in the homeland security effort. At the core of every initiative currently underway to protect our country and its citizens is the challenge of getting the right information to the right people at the right time. How can so much information from around the world be captured and processed in meaningful and timely ways? Mr. Fulton shares his insights into the intelligence community, and shares a vision of how today's information systems will be developed into even better counter-terrorism tools of tomorrow.

Its all BU*SH*IT