Real story:
When I was in the Coast Guard there was a hostage rescue exercise going on at the pier we were tied up to. Across the pier was a buoy tender, and that was the where the "hostages" were, the crew of the tender were acting the part of "terrorists". We were told we could watch and warn the crew of the buoy tender of anything we saw, but we weren't part of the exercise. Special Forces were going to board, remove the hostages, and escape sometime in the next 48 hours.
We all figured there would be helicopters, guys in black, explosions, etc. Everyone wanted to see it so lots of people were hanging out on deck. About two hours later, we were told that the exercise was over. No one saw a THING. According to the crew of the tender, three guys had "You are dead" signs on them, none of them had any idea that the other guys were there until hands grabbed them and put the sign on 'em. This was the crew of this ship, they LIVE on it...and they were completely unable to even raise an alarm until after the exercise. Note: several of the crew did have MLE (Maritime Law Enforcement) experience too.
If they were "pros", they'd get the job done. Something happened. We'll never know.