UFOs shot down by Sidewinder missiles The U.S. military used AIM-9X Sidewinder short-range missiles to bring down four airborne objects overflying the U.S. and Canada AIM-9X SIDEWINDER Supersonic, heat-seeking, air-to-air missile Infrared system guidance allows missile to home in on targets by day or night Active optical target detector Annular blast fragmentation warhead Solid fuel rocket motor High Off-Boresight seeker Length: 3m Weight: 84kg Range: 20km Contractor: Raytheon Cost per unit: $439,000 Block II variant Lock-on-after-launch feature enables missile to engage targets beyond visual range AIM-9X can be integrated with wide range of aircraft, including F-16 and F-22 F-22 Raptor Feb 4 downing of China’s alleged spy balloon marks first F-22 air-to-air kill since plane’s combat debut in Syria and Iraq in 2015 Sources: U.S. Navy, Raytheon, Airforce Technology, Bloomberg Pictures: U.S. Navy, Newscom © GRAPHIC NEWS