The history of the U.S. Coast Guard and its predecessor agencies dates from 1790, with missions in both domestic and international waters. The service has provided aids to navigation, enforcement of maritime laws, environmental protection, search and rescue, immigration and narcotics interdiction, maritime safety assistance, port security, natural disaster response and national defense missions, including overseas with other U.S. armed forces and federal and state public safety agencies. The Service has operated under the Department of the Treasury, the Department of Transportation and, since...