Black Mesa Transit System anyone?,(reply>), Fluffy Destroyer Quarter Life 7,(reply>), Fluffy Destroyer that's more like the train at Denver intl,(reply>), Cubic Apocalypse especially since they explode after just a few shots,(reply>), I think it was only at 1989 that the US army turned it into the research facility. Since the cold war happened between then and half life is set around the late 90s it would make sense how long it would probably take to get rid of the missiles,(reply>), High security. That's why we leave armed missiles lying around for everyone to check out. It's part of the tour.