Also note that the exceptionally beautiful and harmless looking fiberglass fenceposts that surround the White House are, actually, slip-on covers for *solid* hardened steel posts which are anchored down to solid bedrock (just guessing ).

I saw the results of a car hitting one of 'em by accident. Let's just say the post didn't move - but the pretty fiberglass shell did.

made me wonder how many other hidden security measures I didn't notice.