Hanu Singh, a scientist with the Woods Hole Oceanographic Institute, explains the process required to put the institute's unmanned underwater vehicle into the water to Petty Officer 3rd Class Brian Gangl, a boatswain's mate aboard the Coast Guard Cutter Healy, during a simulated oil spill recovery exercise walk-through on the icebreaker in the Arctic Ocean Sept. 9, 2013. The Healy deck department worked with science and research passengers to safely maneuver many pieces of heavy, sensitive equipment into the water. (U.S. Coast Guard photo by Petty Officer 3rd Class Grant DeVuyst)