WASHINGTON, July 18 -- The U.S. Department of Homeland Security Coast Guard issued the following news: * * * Lost at Sea--The origins of our SAR mission * When Treasury Secretary Alexander Hamilton established the service in 1790, the stated purpose of the revenue cutters was law enforcement. However, after its founding, ships of the United States Revenue Cutter Service assisted vessels in distress as was the custom for mariners at sea. This unofficial mission had been a Good Samaritan tradi  more