In 1961 a Hollywood film studio made a movie named "Sniper's Ridge". This film is mostly a forgettable story of a unit of American soldiers fighting the Korean War. At one point during a combat sequence, I happened to notice that there was a white fuzzy object in the distance behind one battling GI. I considered that this thing might be an airplane, but it's appearance and behaviour don't match that of a conventional aircraft of that time. Below is an animated GIF of the relevant frames taken from the movie. The first animation has the object circled to aid you in finding it. The second in plain, for your study. Only frame containing the anomaly were used, hence the "jerkiness" of the actor's motion.