KEFLAVIK, Iceland (April 4, 2022) A Sailor from Underwater Construction Team One Construction Dive Detachment Bravo, based out of Joint Expeditionary Base Little Creek, Va., conducts a front step water entry into Helguvik Harbor, Iceland, to kick off an ultrasonic thickness test survey during exercise Northern Viking 22, April 4, 2022. Northern Viking 22 strengthens interoperability and force readiness between the U.S., Iceland and Allied nations, enabling multi-domain command and control of joint and coalition forces in the defense of Iceland and Sea Lines of Communication in the Greenland, Iceland, United Kingdom (GIUK) gap. (U.S. Navy photo by Logistics Specialist 1st Class Mary Bradford)