Inside an Attack Sub as crew BREAKS THROUGH Arctic ice surface (Video)

BEAUFORT SEA, Arctic Ocean (March 21, 2018) – The Los Angeles class fast-attack submarine USS Hartford (SSN 768) surfacing in the Arctic Ocean in support of Ice Exercise (ICEX) 2018, March 21. 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 video by Chief Darryl I. Wood/Released)
Inside sub with graphic Source: Dvidshub
Outside top view sub USS Hartford Source: Dvidshub