比巡航导弹、高能激光武器更重要的突破性的计划正在进行,几种不同类型的飞机在研制中,一部分已经过两年多试验飞行。 自从1978年初以来,美国一直在进行“隐身飞机”的模型飞机的试验飞行。这种飞机有几种类型,其中既有有人驾驶型,也有无人驾驶型。这项计划定为绝密级。知道这项计划细节的政府官员,至多不过20～30人。操纵这种飞机的驾驶员只有极少数人。 More groundbreaking plans are underway than cruise missiles and high-powered laser weapons. Several different types of aircraft are under development, some of which have undergone more pilot flights. Since early 1978, the United States has been conducting pilot flights of model aircraft “stealth aircraft.” There are several types of such aircraft, both manned and unmanned. This program is classified as top secret. Government officials who know the details of the project are no more than 20 to 30 people. There are only a handful of pilots who operate such aircraft.