Pentagon officials expressed reservations about SpaceX's proposed "subscription-based" missile defense model, accessing the technology by paying a consistent fee.

Elon Musk's SpaceX is one of the companies in line to win the contract to put together Donald Trump's proposed "Golden Dome" missile defense system.

There have been speculation that SpaceX, along with two other companies, had emerged as frontrunners for a key part of the 'Golden Dome' missile defense shield. Elon Musk on Friday posted a clarification on X.