[Uncle Bill]

Blair warns of rogue nuclear strikes - September 15, 2001

[Uncle Bill]

U.S. fears attacks by 'sleepers'
"Federal authorities noted that several of the hijackers, all with suspected ties to U.S. officials' prime suspect in the attacks -- international fugitive Osama bin Laden -- had been in this country for years, living in relative obscurity before carrying out their mission of devastation. There are concerns that they were part of a network of "sleeper agents" who can be called on at any time."