the SR72 as it is tentatively called will not be a manned plane according to Lockheed Martin but rather a hypersonic unmanned aircraft (or UAV).
sr-71从不进入苏联，乃至对华侦查也逐渐尝试使用洛克希德无人系统，1968年牛车计划结束，国家侦察局的载人...
While the Air Force is experimenting with tactical unmanned information gateways like the XQ-58 that...