Legally Naming Moonbase

If you get to the publication stage, I'd get permission from the estate (assuming he's dead) first. Either that, or change the name. It's a quick fix.

I talked to General (Gus) Grissom, one of the original seven astronauts, on the phone a few times while doing some government work. I can only say it was an honor, and the man was a gentleman, through and through.

I'm no expert, but if he's a famous public figure (such as Grissom), and you're just using the name for a clearly-fictional moonbase, I don't see how it would infringe upon Grissom's right of publicity, nor would you be overtly profiting off of his name...