A yardstick measures the thickness of some of the ice that the crew of Coast Guard Cutter Katmai Bay is battling during ice-breaking operations in the Straits of Mackinac Feb. 5, 2014. The crew of the Katmai Bay, homeported in Sault Ste. Marie, Mich., along with the crew of Coast Guard Cutter Bristol Bay, homeported in Detroit, have spent the past few days trying to keep the Straits open to shipping traffic.