And how do you know when a submariner is lying?....
During the briefing for a NATO exercise, Norweigan submariner gave talk on his boat's capabilities in coastal waters - said he had never been detected during freeplay and he wouldn't be in this exercise. We subsequently bounced and attacked him. At debrief he provided evidence to show he was nowhere near the alledged attack position. However in addition to his acoustic signature, we had tapes of a decoy deployed by our target, just happened to be the type used by RNoN subs and he was the only one in the exercise. Do submariners lie.....not much!