Highlights from the Second Episode of Season 4 of NCIS: LA

Pictured (L-R): Eric Christian Olsen (LAPD Liaison Marty Deeks) and Daniela Ruah (Special Agent Kensi Blye). A drone strike on a bomb-making compound in Afghanistan reveals the body of a recently retired Marine, leaving the NCIS: LA team to investigate why the Marine returned to Afghanistan and whether or not he betrayed the country he fought for. Photo: Cliff Lipson/CBS ©2012 CBS Broadcasting, Inc. All Rights Reserved.

Pictured (L-R): LL COOL J (Special Agent Sam Hanna), Chris O'Donnell (Special Agent G. Callen), Eric Christian Olsen (LAPD Liaison Marty Deeks) and Daniela Ruah (Special Agent Kensi Blye). A drone strike on a bomb-making compound in Afghanistan reveals the body of a recently retired Marine, leaving the NCIS: LA team to investigate why the Marine returned to Afghanistan and whether or not he betrayed the country he fought for. Photo: Cliff Lipson/CBS ©2012 CBS Broadcasting, Inc. All Rights Reserved.

Pictured (L-R): Chris O'Donnell (Special Agent G. Callen) and LL COOL J (Special Agent Sam Hanna). A drone strike on a bomb-making compound in Afghanistan reveals the body of a recently retired Marine, leaving the NCIS: LA team to investigate why the Marine returned to Afghanistan and whether or not he betrayed the country he fought for. Photo: Cliff Lipson/CBS ©2012 CBS Broadcasting, Inc. All Rights Reserved.

Pictured: LL COOL J (Special Agent Sam Hanna). A drone strike on a bomb-making compound in Afghanistan reveals the body of a recently retired Marine, leaving the NCIS: LA team to investigate why the Marine returned to Afghanistan and whether or not he betrayed the country he fought for. Photo: Cliff Lipson/CBS ©2012 CBS Broadcasting, Inc. All Rights Reserved.

Pictured (L-R): Chris O'Donnell (Special Agent G. Callen) and LL COOL J (Special Agent Sam Hanna). A drone strike on a bomb-making compound in Afghanistan reveals the body of a recently retired Marine, leaving the NCIS: LA team to investigate why the Marine returned to Afghanistan and whether or not he betrayed the country he fought for. Photo: Cliff Lipson/CBS ©2012 CBS Broadcasting, Inc. All Rights Reserved.

Pictured Behind the Scenes: LL COOL J (Special Agent Sam Hanna). A drone strike on a bomb-making compound in Afghanistan reveals the body of a recently retired Marine, leaving the NCIS: LA team to investigate why the Marine returned to Afghanistan and whether or not he betrayed the country he fought for. Photo: Cliff Lipson/CBS ©2012 CBS Broadcasting, Inc. All Rights Reserved.

Pictured Behind the Scenes: LL COOL J (Special Agent Sam Hanna). A drone strike on a bomb-making compound in Afghanistan reveals the body of a recently retired Marine, leaving the NCIS: LA team to investigate why the Marine returned to Afghanistan and whether or not he betrayed the country he fought for. Photo: Cliff Lipson/CBS ©2012 CBS Broadcasting, Inc. All Rights Reserved.