Melting ice in the Arctic is creating opportunities for access to oil and gas, and shipping lanes. But the area is still mostly frozen and navigating the inhospitable region on top of the world still requires an icebreaker, the heavy duty ships that are able to crash through massive layers of ice.
The U.S. Coast Guard is responsible for search-and-rescue missions, as well as protecting the environment and defending U.S. sovereignty. The U.S. is one of five countries with territorial claims to the land and waters of the Arctic (The others are Canada, Russia, Norway and Denmark.).