The Guardian - US

The defense system focuses heavily on the concept of space-based sensors and interceptors. The company that currently dominates the market for such equipment is the Elon Musk-owned SpaceX, leading to concerns that this project is another way for Musk to make money from federal programs.

Okay, that's really stupid. It's almost impossible to defend a satellite, and any country that could pose a credible threat from missile attack could also knock out the satellites.