Nice scene, but the camera is moving a bit and it is only visible on the set, not on the helicopters.
In my opinion, the video scene should have been shot with a travelling move to get both a good tracking and a more live feeling.
When capturing video for matchmoving, don’t forget to disable all built in stabilizer (Optical or Electronic), and don’t use software stabilization, because both ruin 3D data in the image.
For what I know, SynthEyes is the only tracking software including a 3D stabilizer keeping 3D informations. At least it was when I purchased it some years ago.
Two years ago, I bought a Steadicam Merlin, a light hand held mechanical stabilizer. It is rather expensive (around 1000 USD), but it is a jewel. It is the perfect tool for perfect travellings without requiring rails. I almost never use my camcorder without it. You can run, go up and down in stairs, do linear or circular travellings, panoramics…and you get always perfect shots for matchmoving without using the camera internal stabilizer !