(July 27, 2026)

Note: Estimated inventories today account for additional interceptor use and new deliveries since the April 8 ceasefire. THAAD deliveries during the ceasefire outpaced estimated use over the same period, resulting in higher inventories today than in April. Patriot calculations include the latest MSE variant and PAC-3s. Several hundred PAC-2s, not represented in the chart, are estimated to remain in the U.S. inventory.
Source: Authors’ calculations based on FY 2027 DOD budget materials and publicly released information. Methodology detailed in Mark F. Cancian and Chris H. Park, “Last Rounds? Status of Key Munitions at the Iran War Ceasefire,” CSIS, April 21, 2026.