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While TV's NCIS is centered on the fast-paced drama within our nation's capitol, star Brian Dietzen admits he's never been to Washington, D.C.—until now.

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In celebration of Flag Day earlier this month, Dietzen (who plays medical examiner's assistant Jimmy Palmer on the hit CBS series) took part in American Airlines' inaugural flight from Los Angeles to D.C. alongside WWII Veterans to soak in the sights and sounds of the city, bringing with him his signature goofball sense of humor.

The 34-year-old star documented his sightseeing venture exclusively for ETonline, which you can see for yourself in the player above.