Just a small point of legal pickiness I suppose, but the U.S. Coast Guard is part of the Department of Homeland Security. It used to be part ofthe Transportation Department and before that was part of Commerce, Treasury and I don't know who else. In time of war the USCG can be activated and become part of the Navy the same was the Federal Aviation Administration can become part of the Air Force.
They are organized on military lines and have partly a law enforcement function, partly environmental, partly SAR and partly other safety for the navaigable waters of the U.S. and partly every other thing that happens on aor in the water. And good luck to them regardless of the type of weapon they carry, with their budget I'm suprised it isn't cutlasses and Navy Colt revolvers.