SAN DIEGO (April 19, 2021) Sailors in the U.S. 3rd Fleet Joint Operation Center establish communications with participating units as part of U.S. Pacific Fleet�s Unmanned Systems Integrated Battle Problem 21 (UxS IBP 21). U.S. Pacific Fleet�s UxS IBP 21 integrates manned and unmanned capabilities into operational scenarios to generate warfighting advantages. (U.S. Navy photo by Mass Communication Specialist 1st Class David Mora Jr.)