SAVANNAH, Ga. - A Coast Guard Air Station Savannah HH-65 Dolphin helicopter air crew hovers above the Savannah River during water survival training Wednesday, Feb. 22, 2012. Air Station Savannah has provided search and rescue coverage 24 hours a day, 365 days a year, for 450 miles of shoreline from the northern border of South Carolina to Melbourne, Florida, averaging more than 250 search and rescues cases a year. U.S. Coast Guard photo by Petty Officer 1st Class Christopher Evanson.