I worked on  the RF transponder that relayed all the data to central station for display but it also was a position location system similar to GPS so the trainers knew where your vehicle was all the time. Sometimes a crew would unscrew antenna to disappear from the display map and then reappear later after they took a shortcut across a keepout zone, ie. they 'cheated' and the trainers knew it.

We got one box back that looked like it was ripped open by a giant with 1/4" steel plate ripped like a piece of paper. The $20,000 RF transponder was stabbed clean thru with the I/O box killed the same way. All this was done with the pick axe used to clean the tank cleats. Stupid kid destroyed $50,000 dollars worth of electronics cause it was spying on him so his crew couldn't win the game. Winning wasn't the goal, being trained the proper reactions to a given scenerio was. I imagine the dumbass did  jail time for what he did.