I can guarantee you my eyes were not playing tricks on me. That would mean that 2 different people's eyes were playing the same tricks! Not the case. Also, us fighter jets do not fly 1 plane in front, 2 planes in back, to form a triangle.
I too have seen the stars zig zag. Multiple instances. Usually the star appears for about a minute in its trajectory across the sky. It always occurs from my observances, in the direction straight up from the ground. I have seen variant speed, and many instant directional changes. I have seen...