Army Gen. Martin E. Dempsey, center right, chairman of the Joint Chiefs of Staff, his wife, Deanie, discuss U.S. ice-breaking capabilities and polar operations with Coast Guard Capt. George Pellissier, left, commander of U.S. Coast Guard cutter Polar Star, a polar icebreaker home ported in Seattle, Oct. 3, 2012. U.S. Coast Guard photo by Petty Officer 3rd Class Nathan W. Bradshaw