SAN FRANCISCO -- The last US icebreaker capable of crushing through the thickest ice of the Antarctic and Arctic resumed its mission after the latest repairs to postpone its already past-due retirement.
Associated Press: Nation’s last big icebreaker endures despite age
This July 3, 2013 US Coast Guard photo shows the Coast Guard Cutter Polar Star, completing ice drills in the Arctic. The US Coast Guard's Polar Star accepted an Australian request to go to the aid of the marooned Russian ship Akademik Shokalskiy which has been beset by ice since Dec. 24, 2013.
