[Peach]

Yousef trained a lot of people before he was captured. Of the 75,000 bombing incidents the FBI had investigated to that date he was captured, he was the most experienced and creative.

[USF]

Yousef lived in the United Kingdom for a while, and received part of his engineering studies there. As for creativity, yup, that's where he had the upper hand on most bomb experts... sometimes, when trained in an unrelated discipline, one is predisposed to thinking out of the box, and coming up with original ideas when dealing with a problem.

The worrying part is this is not over... there are many more Ramzis out there, and they each only have to succeed once. We have to stop all of them, every time. All while our limited resources are currently being thrown in directions where the cost benefit aspects make little sense.