[link|http://www.suntimes.com/output/terror/cst-nws-caves10.html|Neat stuff about ground penetrating radar and other techniques]

Excerpt:

Besides, Wilt adds, cave detection poses obvious practical problems in wartime. Because even sophisticated devices may not discern one of bin Laden's caves from more than ''a few hundred feet away, he's not going to let you get any closer.''

I say:

If they're trying to keep us away from a location, that's a dead giveaway. Find the nearest cave entrance with a UAV, then send a Tomohawk right down its throat. Any questions?