PORTLAND, Maine- Media crews document the deployment of a vessel of opportunity skimming system from the deck of Coast Guard Cutter Marcus Hanna as part of Spill of National Significance Drill, March 24, 2010. This SONS exercise simulated a rare, catastrophic oil spill in the Gulf of Maine, with events taking place in Boston, Maynard, Mass., Portland, Maine, Portsmouth, New Hampshire, Washington, D.C., and Portsmouth, Va. (Photo by U.S. Coast Guard Petty Officer 2nd Class Etta Smith)