The Lockheed SR-71 is a long-range, advanced reconnaissance aircraft developed by Lockheed Martin 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, allowing it to gather intelligence effectively during the Cold War. Equipped with sophisticated cameras and sensors, the SR-71 played a crucial role in aerial reconnaissance missions. Its design featured a sleek, elongated fuselage and unique materials that could withstand extreme temperatures. The aircraft was retired in 1998, but its legacy continues to influence modern aviation technology.