A U.S. Coast Guard crew from Memphis, Tenn., rescued three men whose vessel sank on the Mississippi River, near Tunica, Miss., Thursday at about 10:15 a.m. Ron Nigg, Rick Howell and Tony Lippman were rescued after their 22-foot skiff sank as they were returing from an oil spill cleanup in Tunica. At the time of the accident, there were high winds and choppy conditions reported on the river. A Coast Guard inspection crew from Marine Safety Office Memphis was also at the Tunica oil spill site monitoring cleanup efforts when they were informed that the three men were in the water. The crew, Lt. Ted Lampton, Petty Officer 3rd Class Wyatt Ingram and Petty Officer 3rd Class Jacob Taylor…