[ParadigmLost]

And remember a jet taking off from Vegas, heading east or internationally would be loaded with fuel.

Add in a truck bomb that was crossing the span at ~ the same time.?

[MamaDearest]

More than one large airport in this country have freeways and major highways intersecting locations where landing planes fly over the highway and are within missle or rocket range. I-205 at Portland International Airport is just one of them.

[texasbluebell]

If I'm not mistaken, trucks are no longer allowed to drive across, and I think that's from right after 911.

We in fact were driving across it 3 days after 911, security was very tight on the highway going up to it, cars had to slow down at checkpoints so police could look in the cars -- just a little profiling going on there too.

I do think you've gotten closest to what that sketch is, and a plane is probably the only thing that could take that out.

[texasbluebell]

Speaking of dams, I saw that Grand Coulee was on the list of targets that msnbc posted, which is in an earlier comment above.

Thought I'd find some photos of it to compare with the Hoover, and this one is pretty nice!