The Coast Guard assists three people aboard a  sailing vessel taking on water 37 miles southeast of Charleston, Friday, Dec. 18, 2020.  ( U.S. Coast Guard photo) CHARLESTON, S.C. — The Coast Guard assisted three people aboard a sailing vessel taking on water 37 miles southeast of Charleston, Friday. A Coast Guard Air Facility Charleston MH-65 Dolphin helicopter aircrew arrived on scene and lowered...