Scientists with the Air Force Research Laboratory and the Pentagon’s research arm are working to build a new hypersonic air vehicle that can travel at speeds up to Mach 5 while carrying guidance systems and other materials.

Air Force Chief Scientist Mica Endsley said the service wants to build upon the successful hypersonic test flight of the X-51 Waverider 60,000 feet above the Pacific Ocean in May of 2013.

Endsley said the Air Force and DARPA, the Pentagon’s research entity, plan to have a new and improved hypersonic air vehicle by 2023.

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