How not to fly formation
 

Cessna jump planes collide.


https://www.youtube.com/watch?v=7p6hqMnsLFY


full narrative here...
Gone with the Wing | Blue Skies Magazine

Yep, remember that being posted when it happened, but the vids back then didn't have the compilation of all of the vids from the various cameras. If you've gotta have a mid-air collision, may as well be in a couple of small planes full of folks wearing parachutes.

Flying formation is the hardest flying you can do......Lead air craft is the easiest formation position.

This is how it's done:
Uncomfortably close formation flying. : nonononoyes

(warning: the .gif link is 60MB.)

Really were not flying formation...moron pilot was managing the jumpers instead of flying the plane. Moving +- 50 ft up or down takes just a flinch on the wheel.
Funny thing is ...most the jumpers continued their free falls.