Flypast was a practice run for an Air Force Memorial Day flyby
erm...do they really need to practice a flypast? I mean aren't the military trained to have a quick squint at a map and some photos, and watch some chap with a handlebar moustache and a big pointer saying "enemy concentrations are here, here and here" then just come whizzing over the ridge, drop the eggs bang on target and then they're off back home to the mess and their black labrador?
I mean, did they practice flying over Berlin a few times first, just to get a handle on the Reichstag and the Brandenburg Gate?