SR-71 BLACKBIRD Was a long-range、 Mach 3.5+ strategic reconnaissance aircraft developed by Lockheed and its S Works? division. It was the first aircraft to be constructed mainly of titanium. At full velocity the airplane surface heats up to over 260°C+ (500 °F). A total of 3、551 missions were flown and not one Blackbird was lost due to enemy military retaliation.Note: S Works is the nickname for Lockheed's Advanced Development Programs. S Works engineers have developed highly advanced、 military aircraft、 often in secret、 since World War II. Item#: LL062 Number of sheets: 1 Sheet Difficulty: Easy Assembled Size:3.94" x 2.03" x 1.17" (10.1 x 5.2 x 3 cm)