CALLAO, PERU, (September 9, 2026) - Peruvian navy service members conduct visit, board, search, and seizure drills while participating in UNITAS 2026, a U.S. Naval Forces Southern Command and U.S. Fourth Fleet-sponsored training exercise at Base Naval Del Callao, Peru Sept. 18, 2026. Hosted this year by Peru, this exercise trains forces to conduct joint maritime operations and focuses on strengthening partnerships, increasing interoperability and capability between participating naval and Marine Forces. (U.S. Marine Corps photo via DOW)