Thank you for the correction! You are right. I was thinking about the act of "aerial-spraying of drug producing crops". For Wikipedia: "In many cases the spraying is carried out by American contractors, such as DynCorp, using planes and helicopters to spray Roundup on coca plantations. Aerial spraying has been repeatedly condemned by human rights and environmental activists because of its affect on human populations and local soil and water systems. In December 2000, Dutch journalist Marjon van Royen found that "because the chemical is sprayed in Colombia from planes on inhabited areas, there have been consistent health complaints [in humans]. Burning eyes, dizziness and respiratory problems being most frequently reported."