U.S. 4TH FLEET AREA OF OPERATIONS (Dec. 20, 2020) A barge delivers U.S. Mail to the guided-missile destroyer USS William P. Lawrence (DDG 110). William P. Lawrence 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 in the Caribbean and eastern Pacific. (U.S. Navy photo by Jessica McClanahan)