STRAITS OF MACKINAC - Crewmembers aboard the Coast Guard Cutter Hollyhock, homeported in Port Huron, Mich., transit through ice near Mackinac Island, Jan. 24, 2012. The crew of the Hollyhock is participating in a project led by the Coast Guard's Research and Development Center, showcasing techniques for removing spilled oil from a frozen environment. U.S. Coast Guard photo by Petty Officer 1st Class Matthew Schofield.