The United States Coast Guard have been keeping the coasts safe since August 4, 1790. At the time it was known as the Revenue Marine. Despite the name change in 1915, the Coast Guard is considered the longest running seafaring service in the US. Their job is to man the domestic waters of America by enforcing laws, keeping the border secure, and completing search and rescue missions when necessary. Coast Guard Day celebrates the birthday of the Coast Guard by honoring those men and women who serve.