A group of snowmobilers were rescued after they came across thin ice on Sebec Lake early Saturday morning, and one man was treated for hypothermia, according to Game Warden Cpl. John MacDonald of the Maine Department of Inland Fisheries & Wildlife. Timothy Carignan, 30, of Berwick; Nicholas Smith, 31, of Berwick; Nathan Lynch, 32, of North Berwick; and James Taylor, 39, from Dover, New Hampshire, were snowmobiling just after midnight on Feb.9 when they encountered the thin ice, MacDonald said. Lynch and Taylor — and their snowmobiles — became completely submerged, but Carignan and Smith were able to avoid falling in the lake. Lynch and Taylor were able to get out of the water and onto the ice.