CARIBBEAN SEA (April 13, 2021) The Freedom-variant littoral combat ship USS Sioux City (LCS 11), fires the 57mm MK 110 gun while conducting a live-fire exercise, April 13, 2021. Sioux City is deployed to the U.S. 4th Fleet area of operations to support Joint Interagency Task Force South�s mission, which includes counter-illicit drug trafficking missions in the Caribbean Sea and eastern Pacific Ocean. (U.S. Navy photo by Mass Communication Specialist 2nd Class Marianne Guemo)