NAVAL AMPHIBIOUS BASE CORONADO, Calif. (Jan. 5, 2021) Sailors attached to Amphibious Construction Battalion 1 (ACB 1) conduct preservation on the deck of an Improved Navy Lighterage System craft in preparation for the Board of Inspection and Survey (INSURV), on NAB Coronado, Jan. 5, 2021. INSURV is a Congressionally-mandated inspection to assess the material condition of U.S. Navy vessels. ACB 1 conducts ship-to-shore transportation in support of amphibious operations around the world. (U.S. Navy photo by Mass Communication Specialist 2nd Class Storm Henry)