自美国与伊朗冲突开始以来，美军的防空弹药库存大幅消耗。[1]根据美国有线电视新闻网报道，美军已消耗接近战前库存80%的萨德反导系统拦截弹，同时约一半的爱国者防空系统拦截弹也已被使用。[1]冲突前美国共储备约452枚萨德拦截弹和2200枚爱国者拦截弹，战斧巡航导弹库存也已使用接近一半。[1]
美军指挥官对库存水平表示担忧。[1]部分关键弹药库存已降至危险低位，恢复战前库存可能需要三年以上。[1]现阶段美军补充能力有限，每月仅能接收约15枚战斧导弹和20枚爱国者拦截弹。[1]弹药库存的严重不足成为特朗普政府在评估是否扩大对伊朗军事行动时的重要考虑因素。[1]
According to U.S. cable news reports, the American military has consumed approximately 80 percent of its pre-conflict THAAD anti-missile interceptor stockpile since the onset of U.S.-Iran tensions [1]. The consumption of critical ammunition has become so severe that military commanders have warned certain vital munitions inventories have fallen to dangerous levels, with restoration of pre-conflict stocks potentially requiring more than three years [1].
Beyond THAAD systems, the U.S. military has also expended roughly half of its Patriot air defense system interceptors [1]. Pre-conflict inventory levels included approximately 452 THAAD interceptors and 2,200 Patriot interceptors [1]. Tomahawk cruise missile reserves have similarly been depleted to near half their original quantities [1]. Current U.S. production capacity stands at only about 15 Tomahawk missiles and 20 Patriot interceptors per month, far below replacement rates [1]. These ammunition shortages have emerged as a significant factor in discussions within the Trump administration regarding whether to expand military operations against Iran [1].