This is true. You can go to any Army or Air Force installation and find various things like this. Professional dunking booths are usually rented out. I was on one installation that had a full-up 15-passenger fishing boat that was anchored and you could rent it for a whole day with a pilot included in the deal.
These guys just figured no one would ever audit the situation and it’d just be written off. Apparently, some officer didn’t buy into the ‘lost’ story and got the investigators to check into people.
GTMO has fishing boats and dive craft for just those kind of rentals. It is cool beyond belief to motor by the border and hear the Cuban guards exchanging radio traffic about the boat.
You cannot see the Cuban guards, but you can hear them.