The Spanish Navy (Armada Espanola) Frigate SPS SANTA MARIA (F 81) (top), the Brazilian Navy (Marinha Do Brasil) Broadsword Class (Type 22) Frigate BNS RADEMAKER (F 49) (center), and the Argentinean Navy (Armada Republica) Destroyer ALMIRANTE BROWN (D 10), steam in formation off the coast of Brazil. Naval forces from Argentina, Brazil, Spain, Uruguay and the United States are participating in UNITAS (United International Antisubmarine Warfare Exercise) 47-06 Atlantic phase