The contract is for a satellite constellation that can "track and target airborne threats globally."

The U.S. Space Force has awarded Elon Musk’s SpaceX a $4.16 billion contract for space-based satellites ahead of the company’s upcoming initial ...

US News: SpaceX has won a contract for over $4 billion to build satellites to track foreign aircraft and missiles as part of President Trump's Golden Dome defe.

The contract is for a satellite constellation that can "track and target airborne threats globally."