No ufos there. I see what you are talking about but in my opinion those 2 things are nothing more than some scratches, reflexions or something on the cockpit window. They move at exactly the same speed with the fighter from which the film was made, and one of them is exactly on the trajectory of the fighter that leaves the formation so I think they would of crashed if the "ufo" was really there.
Edit: I took a second look and i enhanced 2 frames that captured the second "ufo" ( the one closer to the camera) and I came up with another possibility : reflections of other 2 fighters from the same formation. You can see pretty clearly a cockpit window and the sun's reflection on it and the overall shape of the thing is very similar to the other fighter planes around. Although I'm a little confused as why it appears to be blurred?
PS: I'm sorry , I can't upload the pictures, I'm at work right now and all I get when I try uploading them is an error.