The U.S. Navy is mapping out how to expand its presence in the Arctic beginning around 2020, given signs that the region's once permanent ice cover is melting faster than expected, which is likely to trigger more traffic, fishing and resource mining. "The Arctic is all about operating forward and being ready. We don't think we're going to have to do war-fighting up there, but we have to be ready," said Rear Admiral Jonathan White, the Navy's top oceanographer and navigator, and director of the Navy's climate change task force. "We don't want to have a demand for the Navy to operate up there, and have to say, 'Sorry, we can't go,'" he said.