The war with Iran is no longer hypothetical. American forces are engaged. Missiles are being launched. Interceptors are being expended. Precision munitions are striking targets across a widening battle space. And with every salvo, one uncomfortable reality becomes clearer: The United States does not look like it can sustain protracted, high-intensity conflict with a near-peer adversary. This is not a budget debate. It is not an academic exercise in force planning. It is a real-time stress test of the American arsenal, and the early results are troubling. The United States entered this conflict with inventories already strained from years of high operational tempo and insufficient industrial replenishment.