Just type in "CIA drug connections" for decades worth of reportage. Biggest open secret in the world. From just one site:

In Guatemala, Castillo was ordered to conduct his drug raids with the Guatemalan Military Intelligence (G-2), better known as "La Dos", despite the fact that the G-2 runs the death squads that have murdered thousands of people including Americans in that country. In the course of his investigations Castillo discovered that almost every top official in the Guatemalan government (under President Cerezo) was a documented drug trafficker.

Cele was next assigned to represent the DEA in El Salvador at the height of the Contra war. It was there that he began to record intelligence on how known drug traffickers, with multiple DEA files, used hangars four and five at Ilopango airfield to ferry cocaine north and weapons and money south. Hangars four and five were owned and operated by the CIA and the National Security Council. He found out that the traffickers were also being given US visas by the CIA, in spite of their well known activities. Castillo also documented and spoke out about CIA and National Security Agency abuses in a manner utterly consistent with his heritage and the reats of his life.

Then Cele discovered that the Contra flights were under the direct supervision of US Lt. Col. Oliver North (DEA case file GFGD-91-9139) and had the additional protection of Felix Rodriguez (a retired CIA agent) who ran hanger 4 at Ilopango. Castillo was repeatedly warned that the drug profits were being utilized to support the Reagan-Bush backed right-wing "Contras" in Nicaragua and surrounding countries and that he should stop his investigations. Nevertheless, he continued to file DEA 6 reports and telex/cables on these operations. Castillo's reports contain not only the names of traffickers, but their destination, tail numbers, cargo and the date and time of each flight. Some Contra files were reported on DEA case file # TG-87-0003, under the name of Walter "Wally" Grashiem. The other Contra files were reported on GFTG-86-9999, Air Intelligence (El Salvador) and GFTG-86-9145 El Salvador.

Castillo's detailed reports on the cocaine laden planes went unheeded by DEA officials in Washington. Castillo was warned by his boss, Bob Stia and the U.S. Ambassador to El Salvador, not to interfere with the covert operation because it was protected by the White House....

http://www.cia-drugs.com/symposium/index.html

Case numbers, report numbers, tail numbers. All my imagination.