Personally so many people think it's an external threat, when it's just as likely it's some ex-military person that has decided to use his sniper skills again.

That wouldn't surprise me, either. Remember McVeigh, anyone?

Even more scary is the potential for this to be an "Operation Northwoods". Substitute Iraq for Cuba, and Bush and cronies for Eisenhower and cronies, and it's frighteningly similar to the current political situation.