250527-N-OC941-3002 SAN SALVADOR, El Salvador (May 27, 2025) – U.S. Naval Forces Southern Command / U.S. 4th Fleet Commander Rear Adm. Carlos Sardiello, right, discusses the Resolute Eagle unmanned aircraft system (UAS) with Joint Interagency Task Force-South Deputy Director, Rear Adm. Chase Sargeant, left, and Cooperative Security Location (CSL) Comalapa Commanding Officer Cmdr. Victor Barba, center, during the Hybrid Fleet Campaign (HFC) Fleet Experiment (FLEX) showcase event at CSL Comalapa near San Salvador, El Salvador, May 27, 2025. HFC is a learning campaign to retain and improve advantages using next-generation manned and unmanned systems, tested and integrated during and after FLEX. U.S. Naval Forces Southern Command/U.S. 4th Fleet is the maritime component of U.S. Southern Command and the trusted maritime partner for Caribbean, Central and South America maritime forces leading to improved unity, security and stability. (U.S. Navy photo by Chief Mass Communication Specialist John R. Fischer/Released)