Just leave it where it is!
There's a lot more people go on holiday to DC than Houston I'd bet. I've been three times myself.
It's a grubby old thing though, although if I'd been round the planet that many times, I'd probably look the same.
And apparently saying "OMD?" when a tour guide is asking where the name "Enola Gay" came from is not an accepted answer...
(on another note, I asked same guide if there was anything about Sir George Cayley in the museum (he was born in my home town hence the interest). The reply? "Never heard of him"
Jeeze...