English: US Navy (USN) and Spanish Navy ship maneuver through the waters of the Atlantic Ocean while participating in the North Atlantic Treaty Organization (NATO) Exercise Standing Naval Force Atlantic (SNFL). The Standing Naval Force is a squadron of eight to ten destroyers and frigates from different nations in the NATO organization. Pictured foreground-to-background: The Spanish Navy, Santa Maria Class Frigate, Navarra (F 85); the USN Austin Class Amphibious Transport Docks, USS Trenton (LPD 14); the USN Tarawa Class Amphibious Assault Ship, USS Saipan (LHA 2), and the USN Oliver Hazard Perry Class Frigate, USS Simpson (FFG 56).