History
The Lockheed U-2, nicknamed "Dragon Lady", is operated by the United States Air Force (USAF), National Aeronautics and Space Administration (NASA), the United States Navy, The Republic of China (Taiwan) Air Force and previously flown by the Central Intelligence Agency (CIA). It provides day and night, high-altitude (70,000 feet; 21,000 m), all-weather intelligence gathering. The U-2 has also been used for electronic sensor research, satellite calibration, and communications purposes, has been modified into the TR-1 (since redesignated U-2S) and ER-1 (NASA). The type was successfully adapted for operations on aircraft carriers (U-2G) , but the type was never officially operated from carriers.