Have you ever thought about throwing something out of the aircraft? Now you have the chance! Don't worry, we read 14 CFR 91.15 ... thoroughly.
The goal of the Message Drop event is to throw a "bomb*" from 200' AGL and hit a target on the ground below.
It requires perfect coordination between the Pilot and the Drop Master to ensure the bomb* falls at the exactly correct spot. Both must consider wind, prop wash, the speed of the aircraft, and how and when the bomb* is released: a second early or late could result in missing the target by more than 50 feet!
*Not a real bomb, promise.