Notwithstanding the advice of one’s parents, one may sign many things without reading them carefully, and so the pilot may not have taken note of that restriction, which was merely one of dozens of conditions and codicils that occupied three single-spaced pages of the rental agreement. Or he may have consciously chosen to ignore it. In any case, security cameras at Marathon Airport, which is in those very Florida Keys, recorded the airplane taking off shortly after midnight. It was a warm, calm night with clear skies and unlimited visibility, but the moon was on the other side of Earth. The only light over the Florida Bay was starshine, and the southern tip of Florida, across the bay, is an unpeopled wilderness. The airport cameras recorded, along with the receding lights of the Arrow as it climbed out from Runway 25 and turned north, the fact that there was no visible horizon.