The United States has faced a significant depletion of its missile stockpiles due to extensive use during the recent conflict with Iran. According to a report from the Center for Strategic and International Studies (CSIS), key missile systems such as Precision Strike Missiles and THAAD interceptor missiles have seen usage rates of at least 45% and 50%, respectively. Experts warn that replenishing these systems could take three to five years, creating a vulnerability in the US military's readiness for potential conflicts with near-peer adversaries like China. While the Pentagon maintains that it has sufficient resources for current operations, concerns have been raised by military leaders and lawmakers regarding the long-term implications of missile usage rates and the adequacy of US air defense capabilities. The report highlights that near-term deliveries remain limited due to historically small procurement orders, despite efforts to boost production capacity.