170816-N-GR361-030 SANTA RITA, Guam (Aug 16, 2017) A Mark VI patrol boat assigned to Coastal Riverine Group (CRG) 1, Det. Guam, and operated by Coastal Riverine Squadron (CRS) 2, pulls alongside the littoral combat ship USS Coronado (LCS 4) during a proof of concept exercise. CRG-1 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 2nd Class Kaleb R. Staples/Released)