SAN DIEGO (April 19, 2021) The guided-missile destroyer USS Fitzgerald (DDG 62) gets underway to conduct the U.S. Pacific Fleet�s Unmanned Integrated Battle Problem 21 (UxS IBP 21). UxS IBP 21 integrates manned and unmanned capabilities into challenging operational scenarios to generate warfighting advantages. (U.S. Navy photo by Mass Communication Specialist 2nd Class Kevin C. Leitner)