Product Placement Blog ➞ CarharttCarhartt Jacket Worn by Mark Harmon as Leroy Jethro Gibbs in NCIS Season 17 Episode 10 “The North Pole” (2019)December 18, 2019 Sergey TV Show Hi! On Wednesday, December 18, I analyzed a TV Show and product placement was spotted: Carhartt Jacket Worn by Mark Harmon as Leroy Jethro Gibbs in NCIS Season 17 Episode 10 “The North Pole” (2019).Here are 5 image(s) below: