"[...] It is much more likely that the reports of flying saucers are the results of the known irrational characteristics of terrestrial intelligence than of the unknown rational efforts of extra-terrestrial intelligence."
Richard Feynman.
It's pretty official. We may be an underdeveloped nation, but we can keep track of our airplanes. The chilean army keep track of this things because they are paranoid, they worry the peruvian army might be spying us with some secret russian tech (lol). Chilean an Peruvian military have their own mini cold war going on.
This might even be a move to showcase the Chilean Airforce surveilance skills.