To anyone who happened to be looking up that morning, perhaps from the deck of a boat off the coast of Portsmouth, New Hampshire, the plane would have appeared to be on an extremely alarming trajectory. It rocketed into the cloudless late-summer sky at a 45-degree angle, slowed momentarily and leveled out, then nosed down toward the ocean, plunging 17,000 vertical feet in a matter of seconds. At the last moment, it leveled out again and began another climb, looking for all the world as though it were being piloted by a hopelessly indecisive hijacker.
Onboard the plane, the mood was euphoric and a little hysterical. The main cabin had been converted into a kind of padded cell, lined with soft white tiles in lieu of seats and overhead bins...
