180321-N-HI707-690 BEAUFORT SEA (March 21, 2018) Hector Castillo, a U.S. Navy Arctic Submarine Laboratory technician, speaks with crewmembers aboard the Seawolf-class fast-attack submarine USS Connecticut (SSN 22) after it surfaced through the ice during the multinational maritime Ice Exercise (ICEX) in the Arctic Circle. ICEX 2018 is a five-week exercise that allows the Navy to assess its operational readiness in the Arctic, increase experience in the region, advance understanding of the Arctic environment, and continue to develop relationships with other services, allies and partner organizations. (U.S. Navy photo by Chief Darryl I. Wood/Released)