Tonight, the most aggressive action yet against the U.S. Navy in the Red Sea since the Israel Hamas war broke out. The U.S. Defense Department saying four boats with goofy rebels from Yemen firing on U.S. Navy helicopters, those choppers firing back, sinking three of the four ships and killing all crew members on board. The fourth boat got away. The incident started when the small boat started firing on the Merrick's Hangzhou vessel. The container ship issuing a distress call and firing back until the Navy arrived. The U.S. Central Command saying the rebels were just feet away from getting on board the merchant ship. The Houthis are an Iranian-backed rebel group which controls large parts of Yemen. Sunday's incident, the first time the U.S. has used deadly force while responding to the recent Houthi attacks in the Red Sea. The latest incident coming two weeks after the Defense Department says the U.S.S. Carly shot down 14 drones.