Michael,
In reference to SEALS being able to break anything, we have a theory in the Marine Corps, called "The Three BB's Theory":
Take a Marine, give him 3 bb's, and lock him in an otherwise empty room for one hour. By the hour's end, he will have eaten one, broken one, and lost one.
Not the best joke ever, but the SEAL comment reminded me of it, and I thought I'd share.