NBC News reported, citing three official U.S. sources, that eight U.S. Marines were injured in an Iranian attack about two weeks ago on a vessel they were operating in the Strait of Hormuz. According to the sources, the Marines were not seriously injured but suffered from smoke inhalation and possibly brain injuries, as they showed symptoms of concussion. The Marines, seven of them enlisted personnel and one officer, all returned to duty shortly after the attack, which occurred on September 14. The sources added that the Marines were not aboard a U.S. Navy ship and declined to specify the type of vessel.