Fine series. My favourite is no. 4. It's a disgrace that the plane in no. 1 is called "Osprey". It has none of the Osprey's elegance.
The one who takes a joke only for a joke and seriousness only seriously he and she have got both badly. Grook by Piet Hein in my poor translation.
I love number 5, that is just perfect timing on that shot.
Nice work! Looks like it was a good vapor day!