[Straight Vermonter]

Bin Laden was criticized by Muslim religious leaders for NOT giving a warning before 9/11. They said he should give infidels a chance to convert before killing them.

[Col Frank Slade]

You're right, in the past he gives warnings that are non-specific as to time and place.

Something like sending letters all over the place isn't AQ’s style, so I still say it's a hoax.

Lot's of crazies out there .....