FOX NEWSFORTRESS: The Pentagon is preparing every major U.S. military base to survive 90 days without outside support — no civilian power grid, no global supply chains, no outside fuel or water.The initiative, revealed in documents reviewed by Fox News Digital, envisions portable nuclear reactors, massive battery storage, and microgrids that can disconnect installations from civilian electricity entirely. Strategic reserves of munitions, fuel, critical minerals, and medical supplies would be stockpiled based on wartime consumption rates. Civilian factories are being pre-identified to shift to defense production during a crisis.