U.S. President Franklin Roosevelt (1933-45) and Panamanian President Juan Demóstenes Arosemena (1936-1939) aboard a ferry crossing the Panama Canal, August 1938. During the 1930s, the Roosevelt administration embraced the Good Neighbor Policy toward Latin America and the Caribbean. The diplomatic initiative helped the United States development constructive military-to-military relations with key Latin American partners. (Source: U.S. Army Signal Corps, NARA)