Hypersonic missiles fly beneath the radar cover, which gives warning of ballistic missiles, and they maneuver unpredictably, making them difficult to intercept. In fact, the U.S. has yet to deploy a hypersonic weapon, while Russia has already used its hypersonic Kinzhal missile against Ukraine, and China’s famed “carrier killer” DF-ZF hypersonic is in service and alarming Western analysts. The first six hypersonic weapons on our list—Air-Launched Rapid Response Weapon, Long-Range Hypersonic Weapon (Dark Eagle), Conventional Prompt Strike, Hypersonic Attack Cruise Missile, Anduril’s secret hypersonic, and Kratos Defense’s secret hypersonic—are all in active development. A few failures could see HACM going the way of the canceled Hypersonic Air Launched Offensive anti-surface (see below). Hypersonic Conventional Strike WeaponService: U.S. Air Force | Status: Canceled | Duration: 2018–2020 | Contractor: Lockheed MartinThe Air Force’s Hypersonic Conventional Strike Weapon – HCSW, pronounced “Hacksaw”— was cancelled in 2020.