Omid Abtahi (Persian: امید ابطحی; born July 12, 1979) is an Iranian-born American actor. He is best known for his roles as Salim in Starz Original American Gods, Penn Pershing in The Mandalorian on Disney , Saleem Ulman in NCIS on Paramount , and Homes in the fourth installment of The Hunger Games film series, The Hunger Games: Mockingjay – Part 2. He is also known for his performances as Justin Yates in Ghost Whisperer on CBS and Detective Jerry Molbeck in the American TV adaptation of Those Who Kill on A&E.