Pictured: Chris O'Donnell (Special Agent G. Callen) and LL COOL J (Special Agent Sam Hanna) and Sam reflects on his own upbringing and relationship with his father when the team investigates the murders of marines who have sons in military academies, on NCIS: LOS ANGELES, Monday, Dec. 8 (9:59-11:00 PM, ET/PT) on the CBS Television Network. Photo: Neil Jacobs/CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved.