The Talk - Chris O'Donnell Shares Scariest Stunt with Sharks: "I thought I was being punked"

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Chris O'Donnell, star of "NCIS: Los Angeles," shares a story about his latest prank on co-star LL Cool J. O'Donnell also reveals that in this eighth season, we will learn the identity of his character G. Callen's father, but says it's top secret for now. When it comes to stunt work, O'Donnell says, "I'm up for anything. Hanging off buildings and cars, and all the stunt fights," but adds, "I thought I was being punked... because I read the new script.. and they take me out on a ship and they start chumming the water for sharks and they throw me out... But we did it."