The technology, called Damage Tolerance Control, consists of a palm-sized box stuffed with sensors and advanced algorithms that taps into a plane's existing avionics. It exploits the fact that flight control systems are exponentially more capable to counteract in-flight damage than a human pilot. With all due respect to Sully, a craft's electronics can move its flaps in configurations you could never imagine in the 2 milliseconds available to compensate. Rather than diagnosing the problem, Damage Tolerance Control reacts instantaneously and automatically when it senses a dramatic change in trajectory, adjusting an aileron, say, and cheating the nose to the left to remove drag from the intact wing to keep the craft from whipping into a death spiral. "If you step off your front porch and your leg buckles, you don't have time to diagnose it," Vos says. "You catch yourself and worry about your knee later."