Leary and co-creator Peter Tolan will present objects from the acclaimed TV series to the National Museum of American History in Washington, D.C. on Thursday (14Jul11). The objects will join the museum's popular culture history collections, which is full of notable items from television history.
And Leary, though thrilled by the honour, fears the Smithsonian officials have the wrong guy.
He says, "I don't know how it happened... I think they actually think it's (Willem) Dafoe - they think Dafoe plays the guy. So, when I get there on Thursday, and they get a good look, they're gonna go, 'Wait a minute, we thought you were the Platoon guy!'
"It's (character) Tommy Gavin's helmet and bunker jacket that's going in."