A US military ship fired warning shots after three vessels from Iran's Islamic Revolutionary Guard Corps Navy (IRGCN) came close to it and another American patrol boat in the Gulf, the United States military said on Tuesday. 'The US crews issued multiple warnings via bridge-to-bridge radio and loud-hailer devices, but the IRGCN vessels continued their close range maneuvers,' the military statement said. 'The crew of Firebolt then fired warning shots ...