What does it mean? You know the answer to that question. We have a big problem answered his boss. "But he has to go said Jim."There are only two days before Apollo 13 leaves. We can't go without Ken. "Ken can't go," said his boss Jack Swigert will have to be the command module pilot.'' Jim thought about Jack Swigert. He didn't know Jack as well as Ken. "Jack Swigert is a good pilot, said the mission controller."He can fly the command module, and he's ready.