United States Air Force

In an Debka news article that reads like a bad 007 fiction novel they state that the 911 Terrorists had top-secret codes that allowed them to know where air-force one was, and decode it’s incoming and outgoing transmissions. The U.S. government also thinks that the hijackers had access to codes of the National Security Agency, Drug Enforcement Agency, National Reconnaissance Office, Air Force Intelligence, Army Intelligence, Naval Intelligence, Marine Corpse Intelligence, the State Department, and the Department of Energy.