Complex sentence: Trujillo worked as a cryptanalyst for the Cuban Directorate of Intelligence when he was recruited by the Defence Intelligence Agency, one the USA's sixteen intelligence agencies, one under the umbrella of the Department of Defense.
Split into simpler sentences: Trujillo worked as a cryptanalyst for the Cuban Directorate of Intelligence. He was recruited by the Defence Intelligence Agency, one the USA's sixteen intelligence agencies, one under the umbrella of the Department of Defense.