The JASSM-ER (Joint Air-to-Surface Missile Extended Range) has become a pivotal asset for the United States in its military operations against Iran. With a striking range exceeding 600 miles, these stealth missiles enable US forces to engage targets deep within enemy territory while minimizing risks to pilots. In a significant strategic shift, the US is repositioning nearly its entire stock of these missiles from global reserves to bases linked to Iran, following orders issued in late March. This deployment will leave approximately 425 missiles from a pre-war inventory of around 2,300. The ongoing conflict has already seen the use of over 1,000 JASSM-ER missiles within the first four weeks. However, this heavy reliance on long-range weapons is straining US military stockpiles, potentially impacting readiness for future conflicts with advanced adversaries like China. Additionally, production rates for replenishing these stockpiles are a concern, with Lockheed Martin expected to produce 396 JASSM-ER missiles in 2026. The US military strategy continues to evolve, with B-52 bombers now flying over Iran, indicating a shift towards utilizing cheaper precision-guided munitions. Yet, analysts express concerns about the long-term feasibility of this approach amidst Iran's extensive missile capabilities.