Cooper had tried to prepare himself. When civilians said that, they meant taking a deep breath and clenching their fists. But the trick was to go much farther. To imagine the possibilities, good and bad, in detail. To visualize them the way astronauts prepare for a space walk, spending weeks considering what to do if this gasket leaked or that valve failed. It was a method that had served him well in the past, a way to walk into a room already knowing what he might face and how to respond to it.

