FILE – A 20mm Phalanx CIWS weapons defense cannon is mounted on the U.S. Navy destroyer USS Gravely on March 14, 2023. The U.S. military said Sunday Dec. 31, 2023 it shot down two anti-ship ballistic missiles fired toward a container ship by Yemen’s Houthi rebels in the Red Sea. A contract-embarked security team on the ship returned fire, the central command said. U.S. helicopters from the USS Dwight D. Eisenhower aircraft carrier and GRAVELY responded to the distress call and while issuing verbal warnings to the attackers, the small boat crews opened fire on the helicopters using small arms, the statement said. (AP Photo/John C. Clark, File)