https://arstechnica.com/security/2023/09/heres-what-we-know-about-a-mysterious-launch-from-florida-this-week/

Airspace and maritime navigation warnings released to pilots and mariners suggest the US military might launch a hypersonic missile this week on a test flight from Cape Canaveral, Florida.

This test could be one of the final milestones before the US Army fields the nation's first ground-based hypersonic weapon, which is more maneuverable and more difficult for an enemy to track and destroy than a conventional ballistic missile. Russia has used hypersonic in combat against Ukraine, and US defense officials have labeled China as the world's leader in emerging hypersonic missile technology.