I've put that team onto something else, a kinematics routine for a class of flying spooks that use gasbags to stay aloft - silent and scary.
"Down and Out in the Magic Kingdom"
Cory Doctorow
The few enemy planes left to guard the gasbags had been put to flight by the daring raiders.
"Our Pilots in the Air"
Captain William B. Perry
The gasbags should be about half filled.
"The Mother and Her Child"
William S. Sadler Lena K. Sadler