I was never in the military, but I have attended a few occasions where a lot of mil personnel was present. At one of these hangar parties a plan was hatched to remove a piano from the stage where it had been used earlier in the evening. A cloth behind the stage, and the piano, allowed a forklift to be driven up behind it so that it could be lifted off and driven away (there was plenty of noise to allow this to happen unnoticed). Shortly afterwards, a construction built from pallets in a piano shape was set on fire outside on the platform so that the owner of the piano could get suitably annoyed and agitated before revealing the cunning plan.
Planning: 10 points
Execution: zero points, mainly due to the lesson learned about a piano's stability on the tips of forklift tines during corners.
The people involved were all good sports fortunately and the piano was just written off as collatoral damage.