“FEB 20-MAR 1, 1961: The U.S. carries out maneuvers in the Caribbean as a military demonstration for high Latin American military officials. The operation begins at the Ramey airbase in Puerto Rico and is attended by 60 members of Latin American armed forces and five delegates of the Interamerican Defense Board. H. H. Fischer, president of the Board, announces that the U.S. will keep a military force in the Caribbean on conclusion of the maneuvers. This force will consist of five naval units and a marine infantry battalion Molina.”
“The Bay of Pigs Invasion/Playa Giron: A Chronology of Events,” The National Security Archive, NSArchive2.gwu.edu