Air Force Study Warns US Falling Behind China, Russia in Hypersonic Missiles
![Air Force Study Warns US Falling Behind China, Russia in Hypersonic Missiles](https://cdn5.img.sputniknews.com/images/104451/07/1044510716.jpg)
China and Russia have proceeded in testing high-speed maneuvering weapons (HSMWs), causing anxiety in some circles that the US may be falling behind in its development of hypersonic missiles.