170801-N-MU198-011 PORTSMOUTH, England (Aug. 1, 2017) Boatswain's Mate 3rd Class David Guerra, assigned to the guided-missile destroyer USS Donald Cook (DDG 75), monitors the release of mooring lines from the guided-missile cruiser USS Philippine Sea (CG 58) during a port visit to Portsmouth, England. Philippine Sea is part of the George H.W. Bush Carrier Strike Group, which is conducting naval operations in the U.S. 6th Fleet area of operations in support of U.S. national security interests in Europe and Africa. (U.S. Navy photo by Mass Communication Specialist 3rd Class Danny Ray Nunez Jr./Released)