Coast Guard Cutter Healy, a 420-foot polar icebreaker homeported in Seattle, pulls alongside a pier at Coast Guard Base Seattle, Nov. 5, 2013. Crewmembers aboard CGC Healy returned home after spending almost four months in the Artic where they tested unmanned aircraft systems, an unmanned underwater vehicle, a remotely operated vehicle and an oil recovery Helix skimmer. (U.S. Coast Guard photo by Petty Officer 3rd Class Katelyn Tyson)