The missiles are principally the Army's surface-to-surface weapons, known as Army Tactical Missile Systems (ATACMS) and Precision Strike Missiles (PrSM). The US has used "virtually all" of these weapons, according to two of the sources. AdvertisementThe degree to which the military is running out ​of ATACMS and Precision Strike Missiles has not been previously reported. AdvertisementThe dramatic rundown in precision, long-range missiles means US president Donald Trump may have to rely more on riskier, piloted bombing missions if he relaunches large-scale attacks on Iran. Trump launched the Iran war jointly with Israel in February, predicting that the conflict would last a short time.