The DoD buys from suppliers, who buy from suppliers, and so on. Hence supply chain. Hence supply chain risk.

You would think that's a surprisingly easy concept to grasp, but many are viewing this through the lens of desired outcome and not reality.

I don't think anyone doubts that subcontracts exist. They doubt that Anthropic's insistence that Claude isn't capable of being the operating system for an automated killbot and associated terms the DoD previously agreed to means that there's any danger to the US military from Lockheed Martin using Claude as a code assistant to build GUIs.