The real war being fought in and for the U.S. homeland was a psychological war.

That report, the official said, warned that there "probably would be a foreign terrorist attack on the U.S. homeland, and that aviation was a vulnerability."

Indeed, the FBI had never completed an assessment of the overall terrorist threat to the U.S. homeland.

Cordesman, Anthony H. Terrorism, asymmetric warfare, and weapons of mass destruction: defending the U.S. homeland.

"Ultimately," he added, "in August 2001 we warned about bin Laden's desire to conduct terrorist attacks in the U.S. homeland."

This is terrorist attacks against the U.S. homeland specifically from 1970 to 2008.

Their support structure, however, is sufficiently well-developed that one or more groups could be ramped up by Al Qaeda to carry out operations in the U.S. homeland.

No rail disruption this extensive, especially one triggered by the enemy, had happened in the U.S. homeland since the outbreak of the war.

It refers, for example, to what it calls a "broader concept of imminence" than actual intelligence about any ongoing plot against the U.S. homeland.

Coupled with an ever more sophisticated delivery capability, it meant they possessed the means to strike at the U.S. homeland.