The U.S. is working to catch up with Russia and China in developing hypersonic weapons that travel beyond Mach 5.

Work on replacing the USS Zumwalt's guns with hypersonic missile tubes is nearing completion at the Huntington Ingalls Industries shipyard.

The U.S. Navy is transforming a costly flub into a potent weapon with the first shipborne hypersonic weapon, which is being retrofitted aboard the first of its three San Diego-based stealthy destroyers.

The US Navy is to transform three, white elephant, stealth destroyers by fitting them with first-of-their-kind shipborne hypersonic weapons.The USS

The U.S. Navy is transforming a costly flub into a potent weapon with the first shipborne hypersonic weapon, which is being retrofitted aboard the first of its three stealthy destroyers.