SAN DIEGO (April 20, 2021) The medium displacement unmanned surface vessels Seahawk, front, and Sea Hunter launch for the U.S. Pacific Fleet�s Unmanned Systems Integrated Battle Problem 21 (UxS IBP 21). UxS IBP 21 integrates manned and unmanned capabilities into operational scenarios to generate warfighting advantages. (U.S. Navy photo by Mass Communication Specialist 2nd Class Thomas Gooley)