A fun little game, good job!
Honestly, didn't expect to be flying a plane when I read "Dog Fight", haha, but I liked it.
One small issue I noticed while playing though is that some of the bombs that spawn could be a little too high up on the screen where the plane can't even reach. This doesn't necessarily ruin the game, simply creates one target that can't be hit. Perhaps add a limit to how high/low the enemies can spawn?
In any case, good job and I hope you enjoyed making this game and continue to make more and improve!