The Lockheed U-2 Spy Plane is a single-engine, high-altitude reconnaissance aircraft used by the United States Air Force and other military forces around the world. It was designed in the 1950s to fly at altitudes of up to 70,000 feet, allowing it
From Wikipedia
The Lockheed U-2, nicknamed the "Dragon Lady", is an American single-engine, high–altitude reconnaissance aircraft operated by the United States Air Force (USAF) and the Central Intelligence Agency (CIA) since the 1950s. Designed for all-weather, day-and-night intelligence gathering at altitudes above 70,000 feet, the U-2 has played a pivotal role in aerial surveillance for decades.