'NCIS' 200th Episode: Exclusive Sneak Peek Video

It’s no stretch to say we’re going to see some shocking moments in Tuesday night’s 200th episode of “NCIS” – after all, one early sneak peek showed Gibbs facing off with a gunman.

But we had no idea one of the most surprising revelations would be the amount of time actor Brian Dietzen spends in the gym! Check out this exclusive early look – obtained by Yahoo! TV as part of “NCIS” Week – in which Abby shows off her lab skills and Palmer displays the results of his ab drills.