The Argentinean Navy Espora (Meko 140) Class Frigate ARA ROBINSON (CM 45) fires its 5 inch gun during a surface gunnery exercise conducted as part of UNITAS 45-04 Pacific Phase. Naval forces from Argentina, Chile, Colombia, Ecuador, Peru, and observers from Mexico and Canada are participating in UNITAS 45-04. Eleven partner nations from the US and Latin America joined for the largest multilateral exercise in the Southern Hemisphere since 1959. UNITAS aims to unite military forces throughout the Americas with bilateral and multilateral shipboard, amphibious and in-port exercises and operations, promoting friendship, professionalism and understanding among participants