Cuando se estaba grabando un comercial sobre el nuevo avión Concorde, ocurrió esto. When a commercial about the new Concorde plane was being shot, this happened.
They are real, I saw 6 in formation, unfortunately when I tried to record them, they began to disappear. I only caught 3 seconds. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-5rQ1w07SThA.html