170816-N-AP360-0086 GUAM (Aug. 16, 2017) A Mark VI patrol boat assigned to Coastal Riverine Group (CRG) 1, Detachment 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 Combat Camera photo by Information Systems Technician 1st Class Gregory L. Parker/Released)