PACIFIC OCEAN (April 21, 2021) An MQ-9 Sea Guardian unmanned maritime surveillance aircraft system flies over Independence-variant littoral combat ship USS Coronado (LCS 4) during U.S. Pacific Fleet�s Unmanned Systems Integrated Battle Problem (UxS IBP) 21. UxS IBP 21 integrates manned and unmanned capabilities into challenging operational scenarios to generate warfighting advantages. (U.S. Navy photo by Chief Mass Communication Specialist Shannon Renfroe)