Mid 70s, RAF Bawtry/HQ 1Gp.
One of the duty NCOs tasks was to check that the gate to the AOCs residence was secure after midnight. This involved walking down an unlit path through the woods and a couple of airmen decided to play a prank after leaving the NAAFI. They lay in wait and when they heard footsteps approaching, jumped out screaming. Instead of the expected cries of shock, they received a stream of expletives from AVM Lagesen, who was heading home from the mess.
It became common knowledge who the culprits were but no action was taken as it was believed they got the biggest fright.