The buildup follows September 5 attacks by Iran using Qasem Basir anti-ship ballistic missiles with a 1,200 km range, which allegedly forced warships to pull back 500 km from the Strait of Hormuz. While satellite imagery suggests carriers were absent from the primary blockade line for 26 days, US Central Command reports it has redirected more than 100 commercial vessels to sustain operations. Some analysis indicates the new assets may primarily replace ships currently on station rather than simply adding to the fleet.
