Reg Brown was a counterintelligence analyst who worked on the Latin American desk of the U.S. Defense Intelligence Agency (DIA) and began to suspect that his DIA colleague, Ana Belen Montes, was working as a Cuban informant. Brown assembled a report in the late 1980s attesting to senior Cuban officials’ involvement in international drug smuggling. Just days before the report was scheduled to be published, every official named in the report issued a public denial of their involvement, which proved to Brown that an informant had leaked the information. Brown began to suspect that Montes was the informant after discovering that it was Montes who had arranged the February 23 meeting between Admiral Eugene Carroll and Cuban officials the day before the Cuban Airforce shot down the Hermanos al Rescate planes.