SOUTHWEST HARBOR, Maine - Members of the Coast Guard Sector Field Office in Southwest Harbor host an open house for 20 students from the College of the Atlantic, who are studying the physics and mathematics of sustainable energy, to observe how renewable energy sources have been implemented in a Coast Guard-owned housing unit, April 21, 2010. Coast Guard members in Maine have been working to implement 'greener' energy resources that capitalize on the benefits of renewable energy resources including wind energy, photovoltaic cell technology, solar thermal panels, and wood pellet burners. U.S. Coast Guard video by Petty Officer 2nd Class Etta Smith.