One of those moments
We all hear stories of "He needed a change of underwear after that" as a joke about a tense moment. But did the person really loosen his bowels?
In the 80s I was floating above Sydney at night in the Pork Chopper (Pigs in Space!) on a surveillance for a drug bust. We were following a suspect about to sell drugs, and the ground crew were a respectful distance behind the suspect's car while we called his progress from around 4000'. The car stopped at an unlit park in Parramatta, in Sydney's west, and the suspect got out of his car and wandered to the middle of a football field.
The ground crews parked up and sneaked onto the field in the dark, and when they were ready to nab the suspect, they called for us to shine some light on the area. I quickly descended, and the observer lined up the 30 million candlepower Nite Sun and lit him up. The bad guy froze in his tracks in the middle of the bright spot of light, and from the shadows pounced the drug squad. "Thanks Polair" was the call, and we went back to base.
Our observer was writing up the flight report, and rang the Drug Squad to get the details of the bust. The cop at the other end was laughing loud - the suspect actually shat his pants when the light hit him, and the arresting cops were astounded at the stench. So, it does happen.