The Lockheed SR-71 Blackbird was a long-range, Mach 3.5+ strategic reconnaissance aircraft developed by Lockheed and its Skunk Works division. It was the first aircraft to be constructed mainly of titanium. At full velocity the airplane surface heats up to over 260 degrees celcius. A total of 3551 missions were flown and not one Blackbird was lost due to enemy military retaliation. Note: Skunk Works is the nickmname for Lockheed's Advanced Development Programs. Skunk Works engineers have developed highly advanced, military aircraft, often in secret, since World War ll. Assembled Size 10.1 x 5.2 x 3 cm