180313-N-OO032-0126 APRA HARBOR, Guam (March 13, 2018) Saillors assigned to Coastal Riverine Squadron (CRS) 4 secure mooring lines between two Mark VI patrol boats in Apra Harbor, Guam. CRS-4 is assigned to Costal Riverine Group 1, and is capable of conducting maritime security operations across the full spectrum of naval, joint and combined operations. (U.S. Navy photo by Mass Communication Specialist 1st Class Cory Asato/Released)