U.S. Coast Guard Petty Officer 1st Class Erin Hunter, right, junior officer of the deck, assists Ensign Katharine Braynard, an underway officer, with monitoring the electronic charting system aboard the seagoing buoy tender/icebreaker USCGC Mackinaw (WLBB 30) near Cheboygan, Mich., Nov. 27, 2012. The cutter is delivering Christmas trees to nonprofit organizations in Chicago, Ill.