170512-M-DJ953-0210 PACIFIC OCEAN (May 12, 2017) An AH-1Z Viper attack helicopter takes off from the flight deck aboard the amphibious dock landing ship USS Pearl Harbor (LSD 52) during flight operations to enhance interoperability between Navy ships and Marine aircraft as part of Composite Training Unit Exercise. The inherent versatility of Marine Air-Ground Task Forces joined with the mobility provided by amphibious ships gives the 15th Marine Expeditionary Unit and the America Amphibious Ready Group an asymmetric advantage over adversaries (U.S. Marine Corps photo by Cpl. F. Cordoba/Released)