Early Warning of Missile Defense Munitions Shortage

In late December, two months prior to the onset of the U.S. war with Iran, then-Army Chief of Staff Gen. Randy George warned of a critical shortage in missile defense munitions. According to multiple U.S. officials familiar with the details, George anticipated that these shortages would persist for five more years. The warning was included in the Pentagon's Global Force Management Allocation Plan, an annual directive approved by the defense secretary dictating the allocation of troops and weaponry worldwide.

Ouster of Gen. Randy George Amid War With Iran

Defense Secretary Pete Hegseth relieved Gen. George of his duties in April, as the Iran conflict was ongoing. George's risk assessment, intended for fiscal year 2027 and completed before the start of the U.S.-Israel-led war with Iran, indicated that the stockpile of Terminal High Altitude Area Defense (THAAD) batteries and Patriot missiles would remain strategically low until at least 2030.

Contributing Factors and U.S. Missile Defense Capabilities

U.S. officials indicated that the missile defense munitions shortage has been fueled by the transfer of Patriot missiles to Ukraine following Russia's 2022 invasion, heavy use to defend Israel, and the defense industrial base's limited capacity. While offensive munitions remain in adequate supply according to officials, the available inventory of THAAD and Patriot missile interceptors is considered strategically low.

The THAAD system is regarded as one of the military's most advanced missile defense solutions, designed to intercept ballistic missiles in the terminal phase either within or just beyond Earth's atmosphere. The U.S. Army operates eight THAAD batteries. Each consists of six truck-mounted launchers, managed by 90 personnel, capable of deploying a total of 48 interceptors per battery.

Patriot air-defense systems protect installations, troops, and infrastructure against various aerial threats, including ballistic and cruise missiles and hostile aircraft. When paired with THAAD, these systems offer layered missile defense. The Patriot Advanced Capability-3 (PAC-3) interceptor is cited as the particular munitions type at critical levels of availability.

Current Inventory, Production Challenges, and Industry Response

According to the Center for Strategic and International Studies (CSIS), the U.S. entered 2026 with approximately 2,300 Patriot interceptors, expending between 1,050 and 1,430 during the Iran conflict—representing up to 61% of prewar stockpile. Fewer than 500 replenishment units are expected in fiscal year 2026. For THAAD systems, the prewar inventory stood at around 355 interceptors, with 190 to 290 used in the Iran war—about 82% expended. No replenishments are anticipated for 2026, but over 800 THAAD interceptors were requested for 2027.

Lockheed Martin and RTX’s Raytheon division manufacture these interceptors. Lockheed Martin recently announced plans to quadruple THAAD production from 96 to 400 interceptors per year in an effort to accelerate replenishment.

Procurement and Allocation Through Global Force Management

The Pentagon manages military resources via the Global Force Management Allocation Plan (GFMAP), organizing force deployments annually based on anticipated regional and functional needs. These plans, however, must often adapt rapidly to emergent crises or conflicts. As seen in April 2025, the reassignment of a Patriot battalion from the Indo-Pacific to Central Command exemplified the ongoing shuffling of limited high-demand assets across theaters.

Origins of the Munitions Shortage and Industrial Base Limitations

The roots of the current munitions shortage trace back to post-Cold War assumptions. U.S. military procurement strategies subsequently reduced stockpiles, reflecting anticipated short regional conflicts rather than protracted wars with superpowers. This shift led to significant defense industry consolidations, with the five largest contractors including Lockheed Martin and Raytheon. These companies refined efficient peacetime production but lost the ability to rapidly surge output during active conflicts.

According to CSIS analysis and comments by experts, Pentagon procurement has long prioritized big-ticket acquisitions such as fighter jets and warships over missile and ammunition re-supply. Responding to renewed global security threats under recent administrations, efforts have begun to rebuild surge capacity, but replenishing depleted stocks of missile interceptors will take years—even without additional drawdowns for ongoing or future military operations.

Source: cbsnews.com.