Did he save it? And if so, why? An interesting bit of history of which I’d been unaware. Mondale wanted to kill it, and did manage to reduce the fleet size from seven to five (including Enterprise, which never flew). Which was economically stupid, because it saved very little money. If we’d had six vehicles, we’d have still had four after the losses of Challenger and Columbia (assuming that we hadn’t built Endeavour from spares after Challenger, and those two events would have occurred in that alternate universe). A four- or five-ship fleet would have made for a slightly different calculus after the loss of the latter, because part of the reason the program was ended was that three was too small a fleet to continue to operate for long.