I did see some real aircraft footage intermingled with the CGI stuff in the trailer. One in particular is the rear take-off shot of the P-51's. There are two or three in the center of the frame and those appear to be real as their gear comes up.
Remember, and if you look around You Tube a bit, the set footage posted a year or so ago showed the P-51's making continual passes up and down the set airfield. Take-off's, landings, taxing etc. They use these images not only to help the CGI guys but they become the main background plate that the CGi guys work from. They add aircraft, tents, vehicles, people etc. to the image. Check out some of the stills on line and you'll see only part of the base is recreated. In the trailer you see the shot looking down on the field with P-40's taxing all over the place and the entire air base is full of stuff.
I'm not defending the CGI, as I do think the aircraft still move too fast and try to cram too much stuff into the frame to make it exciting.
I the current climate of hi-powered action films, everything is over cranked, edits are very fast and the audience attention spans are shorter. Remember, we are the exception. We are NOT the target audience for this film. Let's just hope the script was good enough (including the re-writes

) and holds out the story properly and with some coherency.
Let's also pray they don't fly the missions with their Victrola's playing ""Sing, Sing, Sing" in the cockpit because that's the way they fly the best!

(a la Iron Eagle!)
or the sound track doesn't have JayZeee doing the main theme!
Can't wait to see what transpires and how, as adults, we lonely beacons of restraint at WIX, handle it.
Jerry