Shin following a claim by the Revolutionary Guards that they destroyed a US naval drone in the Strait of Hormuz, CENTCOM claims that all US military unmanned surface vessels are considered and remain on patrol. Source: Automatic Persian translation After the Islamic Revolutionary Guard Corps claimed to have shot down a US naval drone in the Strait of Hormuz, US Central Command (CENTCOM) says all US military unmanned surface vessels are safe and are still on patrol. source.