LX is the roman numeral for 60 indicating the 60th year of the exercise. UNITAS, which is Latin for "unity," is an annual exercise conceived in 1959 and first executed in 1960, making it the world's longest-running annual multinational maritime exercise. UNITAS demonstrates U.S. commitment to the region and to the value of the strong relationships forged between our partner militaries. This year UNITAS will have three phases; Amphibious, Atlantic (hosted by Brazil) and Pacific (hosted by Chile).