The Lockheed SR-71 Blackbird is a long-range, advanced reconnaissance aircraft developed by Lockheed in the 1960s. Known for its incredible speed and altitude capabilities, it could fly at over 2,200 miles per hour and reach altitudes of 85,000 feet. This made it difficult for enemy defenses to target and intercept. Designed primarily for intelligence gathering, the SR-71 was equipped with sophisticated cameras and sensors. It played a crucial role during the Cold War, providing vital information to the United States military. The aircraft was retired in 1998, but its legacy continues to influence modern reconnaissance technology.