Now I've played the absolute shit out of this game, so it surprised me to find something that stumped me, but I really go no idea with this one hah. So I was in Nellis Airfroce base, and as I often do, I press A on all the Mister Gutsy robots, that are nearby, because I like their robot voices. Then one of them says "I can't believe we may see the superfortress built in my lifetime." What the hell is he on about? That's first time I've ever heard that dialogue line used, and the first time I've ever heard a superfortress being mentioned by anyone in the game.