Because the likelihood of a dual failure was so remote, the Marshall engineers had not spent much time analyzing how the Saturn V would behave with two engines out. But even the preliminary analyses seemed to indicate conclusively that the vehicle would tumble out of control. They had a euphemism in the space program for such unlikely failures: “a bad day.” You didn’t bother to plan for bad days. By definition, they were the kind of thing that the gods did to you sometimes, and the best thing to do was go home and have a drink and come back the next day to pick up the pieces.
