south american crop dusting

Because it stands for

Fuerzas Armadas Revolucionarias de Colombia

(As a side note, this is how you make yourself vulnerable to being the Cellar punching bag: by showing your ignorance of many subjects while posting like an authority on others. When you don't treat others with respect, and they have an opportunity to make you look like an idiot, they generally will take it. And so it is, because your knowledge of Spanish is obviously extremely poor or non-existant, you ask a question and show yourself to be vulnerable. Perhaps if you weren't so condescending when someone disagrees with you, you might get a warmer reception. In other words, what goes around comes around.)