At the high end, the performance of advanced American-military technology such as the F-35 fighter bombers flown by the United States and its ally Israel has been stunning. Not a single F-35 has been lost. These airplanes, which are flying computers and sensors as much as they are bomb droppers, have remarkable abilities to coordinate with other aircraft, identify threats, and escape detection. So, too, do B-2 bombers and many other remarkable airborne platforms.