The snapshot feature is only going to be available on certain laptops that have the Snapdragon + AI chip. DoD will likely simply just not buy those laptops and ban any org from purchasing them, like they already do for certain hardware that have been found to be especially vulnerable. Additionally, this feature isn’t turned on by default and costs a subscription fee (i.e. Copilot+), so people will have to consciously enable and pay for it. Lastly, in enterprise versions of Windows, I would bet money that it can be disabled via GPO, as it’s not only the DoD that would have serious issues/concerns with this feature.