"NCIS" cast reflects on 250 episodes

Cast, executives and crew celebrate "NCIS" being named the most-watched drama in the world on Aug. 7, 2014, in Valencia, California.

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CBS' TV behemoth "NCIS" is coming back for season 12 this fall, and the cast is reminiscing about marking 250 episodes of the military crime drama in exclusive new interviews.

"Did any of us think it would be where it is now? I don't know," star and veteran actor Mark Harmon reflected.

Pauley Perrette ponders, "I think when we first started, so long ago now, that people didn't quite know what it was about."

The interviews are a bonus feature of "NCIS: The Eleventh Season," which hits DVD and Blu-Ray on Aug. 19.

Season 12 premieres on CBS on Sept. 23 at 8 p.m. ET.

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