This is the latest installment of a PBS series that seems to pick up where the History channel left off. Anything Hitler-related used to be History’s sweet spot, so to speak – but that was in the days before Pawn Stars and American Pickers and Counting Cars and Ax Men and Ice Road Truckers. (Side question: How many franchise-unrelated programs must a cable network televise before it’s required to change its name or be guilty of false advertising?) At any rate, this installment of PBS’s Nazi Mega Weapons tells the story of the V-2, the long-range rocket invented by Werner von Braun that launched the space race. Von Braun, of course, defected to the U.S. after the war and designed rockets for America, including the Saturn V booster rocket that took men to the moon and a series of ballistic missile weapons systems. As lyricist Tom Lehrer once sang so memorably, “‘Once the rockets are up, who cares where they come down? / That’s not my department,’ says Werner von Braun.” Check local listings.