Sailors aboard the Virginia-class attack submarine USS New Mexico tie mooring lines after the submarine surfaced through the arctic ice during Ice Exercise (ICEX) 2014, at Ice Camp Nautilus, Alaska in... more 
Sailors aboard the Virginia-class attack submarine USS New Mexico tie mooring lines after the submarine surfaced through the arctic ice during Ice Exercise (ICEX) 2014, at Ice Camp Nautilus, Alaska in this March 22, 2014 picture provided by the U.S. Navy. The U.S. Navy said on Monday it was dismantling the temporary ice camp used to support submarine exercises off the coast of Alaska a week early after cracks appeared in the ice and made it too risky to use airfields to ferry people and supplies. REUTERS/U.S. Navy/Mass Communication Specialist 2nd Class Joshua Davies/Handout via Reuters (UNITED STATES - Tags: MILITARY SCIENCE TECHNOLOGY MARITIME ENVIRONMENT) ATTENTION EDITORS - THIS PICTURE WAS PROVIDED BY A THIRD PARTY. REUTERS IS UNABLE TO INDEPENDENTLY VERIFY THE AUTHENTICITY, CONTENT, LOCATION OR DATE OF THIS IMAGE. THIS PICTURE IS DISTRIBUTED EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS. FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS less 
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Reuters | Photo By US NAVY / REUTERS
Mon, Mar 24, 2014 6:34 PM EDT