I loved your idea for linking the end with the begining: making it fade to greyscale to impact on the ending; great job on that!
I also liked your choice of music, and I also liked how you slowed the film down a little to emphasize its relation with the music. Cool idea too!
The only thing I'm going to critique in a mildly-bad way is your shots of, basically, the story; not the story itself, wich was fine, but the actual shots.
1. You need to get CLOSE to the action. In other words, if your trying to shoot a plane down and you're firing your guns at him, get a tight camera-shot on the guns! If your shooting him and you blow one of his wings, get a tight camera-shot on his wing being ripped off! I didn't see much of any emphasis on major parts of a scene in your movie, with the exception of the begining and ending, so try to remember this tip: Emphasize the climax of your scenes; it makes your movie much better and interesting to viewers!
2. If the scene isn't full of much action, get different camera angles so your viewers don't get bored watching the same thing. While watching the building scenes in your movie, your main character flying around to the target, I noticed you didn't use very many camera angles. Although, from watching other scenes in your movie, it seems you already know the gist of this tip and probably just forgot to put it in play while in the dissaray of making the film.
These are just some basic tips to keep in mind during your next movie project. Remember that you dont always have to use these tips, or in other terms the "standard" in movies and stories, for your movies. If you have certain reasons, came up with something creative that you want to use instead of the "standard", and it would make the film more interesting, do it!
Anyways, good film there TrueKill! You had some good ideas in your film that I really liked and I'm certainly looking forward to your future movies! Good luck
-Paul