Effective drug law enforcement.

[cunctator_]

Well, about three weeks later he called me and he said that the problem is over, that they had reacted. They had found the people, and he said that we "didn't have any problem anymore in Panama." I asked him, "Well, what did you do? Are they in jail?" He said, "No. we got them in a helicopter and took them out to the cannery, on one of the islands that are close to Panama City, which is infested with sharks, and we threw them in. And that took care of the problem."

http://www.pbs.org/wgbh/pages/frontline/shows/drugs/interviews/heath.html