Not sure why an answer to the question would be downvoted. Anyway, it's possible that the reason was no so much ground-to-air missiles but rather ground-to-air

Not sure why an answer to the question would be downvoted. Anyway, it's possible that the reason was no so much ground-to-air missiles but rather ground-to-air weapons. In other words, idiots trying to shooting guns at airplanes or put up balloons in their path.