Yes, I was pointing out it was a joint affair. Not that it matters, the coast guard deals with maritime law and defending from foreign threats and terrorism, and was working in an official capacity as law enforcement with the navy.

Tell that to the Coast Guard, I don’t think they know.

https://www.gocoastguard.com/about-the-coast-guard/learn-the-history

“In times of peace, the Coast Guard operates as part of the Department of Homeland Security, enforcing the nation's laws at sea, protecting the marine environment, guarding the nation's vast coastline and ports, and performing vital life saving missions. In times of war, or at the direction of the President, the Coast Guard serves under the Department of the Navy, defending the nation against terrorism and foreign threats.”

Coast Guard serves as the maritime law enforcement arm of the Navy when matters of war are involved.

The US Coast Guard is the maritime policing wing of US military. It acts under the control of the Navy when matters of war are considered. As this supposedly involves an ongoing conflict, I imagine they had jurisdiction in that area. In peacetime the Coast Guard acts under the DHS so it would have nothing to do with waters in the Gulf of Yemen.

It wasn’t the US coast guard. It was the US Navy and Coast Guard.