Seacoast: Maine is considered an old hand by state standards at dealing with expected sea level rise, working actively on the issue since at least 2008. And among Maine towns, York is one of the elders, with work dating to 2010 resulting in a detailed sea level rise initiative going before voters this fall. The U.S. Navy is also becoming more proactive, as recent modeling shows significant portions of Seavey Island, home to Portsmouth Naval Shipyard, affected by predicted sea level rise. With 3,500 miles...