The Pentagon's Space Development Agency (SDA) has approved a new initiative to develop satellites to track hypersonic missiles. Specifically, the agency has allocated $1.3 billion to L3Harris and Northrop Grumman to supply satellite prototypes. The two companies, winners of a Tranche 1 tracking layer tender out of seven proposals received, will respectively produce 14 prototype satellites that will become part of the US defence space architecture. Ultimately, according to the agreements, the first launch is scheduled for April 2025.