PORT HUENEME, Calif. (July 7, 2021) A tugboat pushes the Arleigh Burke-class guided-missile destroyer USS Gridley (DDG 101) into Wharf 5 next to the guided-missile cruiser USS Mobile Bay (CG 53), which arrived in port at Naval Surface Warfare Center, Port Hueneme Division in southern California the day before. The warfare center successfully completed Combat Systems Assessment Team events on both ships simultaneously. (U.S. Navy photo by Eric Parsons)