PANews reported on April 3rd, citing Axios, that the US military launched its first attack on major civilian infrastructure in Iran on Thursday, just hours after Trump threatened to bomb Iran "back to the Stone Age." The attack on the Karaj B-1 bridge near Tehran indicates that the US military's target range is expanding, and this may only be the beginning of attacks on energy, water, and transportation infrastructure. A US Department of Defense official stated that more bridges may be targeted. The bridge was attacked because it was used by Iranian armed forces to secretly transport missiles and missile components from Tehran to launch sites in western Iran. Missile components were transported across the bridge in large crates and containers and assembled at the launch sites. According to the official, the bridge was also used to provide logistical support to Iranian military forces in Tehran.