While we tend to think of drones as a very modern addition to the battlefield, the truth is, America's Defense Department has long been interested in the concept of unmanned aircraft. In fact, for a short window of time in the 1960s, America's supersonic, high-flying drones were already attempting reconnaissance flights over China.
In May of 1960, the United States was at a crossroads. A CIA pilot named Francis Gary Powers flying America's classified U-2 Spy Plane had been shot down over the Soviet Union at the start of the month. The ensuing international incident edged the world one step closer toward nuclear Armageddon, and President Dwight Eisenhower made the decision to cease all manned flights into Soviet Airspace as a result. With reconnaissance satellite technology under development but still years away from providing actionable intelligence, Lockheed's famed Skunkworks set to work on another possibility: unmanned flights over the Soviet Union.