The original version of this scene is here:
http://www.youtube.com/watch?v=Y1Uc-...ailpage#t=839s
One commenter on YouTube already feels "Mega March" is far better than "Turn Turn Turn." Offhand I can't say I disagree...
As for the number of warbirds, I lost track when I was putting that scene together!...it was too much for Bryce to handle in one layer, so I wound up having to split the fleet up into several layers and then composite them all together.