Highlights from the Sixth Episode of Season 5 of NCIS: LA

Pictured: Linda Hunt (Henrietta "Hetty" Lange). Callen goes undercover at a prestigious high school after a 15-year-old hacker compromises terrorist missions, on NCIS: LOS ANGELES, Tuesday, Oct. 29 (9:00-10:01 PM, ET/PT) on the CBS Television Network. Photo: Ron P. Jaffe/CBS ©2013 CBS Broadcasting, Inc. All Rights Reserved.

Pictured: Eric Christian Olsen (LAPD Liaison Marty Deeks). Callen goes undercover at a prestigious high school after a 15-year-old hacker compromises terrorist missions, on NCIS: LOS ANGELES, Tuesday, Oct. 29 (9:00-10:01 PM, ET/PT) on the CBS Television Network. Photo: Robert Voets/CBS ©2013 CBS Broadcasting, Inc. All Rights Reserved.

Pictured: Daniela Ruah (Special Agent Kensi Blye), LL COOL J (Special Agent Sam Hanna), Eric Christian Olsen (LAPD Liaison Marty Deeks) and Chris O'Donnell (Special Agent G. Callen). Callen goes undercover at a prestigious high school after a 15-year-old hacker compromises terrorist missions, on NCIS: LOS ANGELES, Tuesday, Oct. 29 (9:00-10:01 PM, ET/PT) on the CBS Television Network. Photo: Robert Voets/CBS ©2013 CBS Broadcasting, Inc. All Rights Reserved.

Pictured: LL COOL J (Special Agent Sam Hanna) and Chris O'Donnell (Special Agent G. Callen). Callen goes undercover at a prestigious high school after a 15-year-old hacker compromises terrorist missions, on NCIS: LOS ANGELES, Tuesday, Oct. 29 (9:00-10:01 PM, ET/PT) on the CBS Television Network. Photo: Robert Voets/CBS ©2013 CBS Broadcasting, Inc. All Rights Reserved.

Pictured: Eric Christian Olsen (LAPD Liaison Marty Deeks), LL COOL J (Special Agent Sam Hanna), and Chris O'Donnell (Special Agent G. Callen). Callen goes undercover at a prestigious high school after a 15-year-old hacker compromises terrorist missions, on NCIS: LOS ANGELES, Tuesday, Oct. 29 (9:00-10:01 PM, ET/PT) on the CBS Television Network. Photo: Ron P. Jaffe/CBS ©2013 CBS Broadcasting, Inc. All Rights Reserved.

Pictured: Eric Christian Olsen (LAPD Liaison Marty Deeks). Callen goes undercover at a prestigious high school after a 15-year-old hacker compromises terrorist missions, on NCIS: LOS ANGELES, Tuesday, Oct. 29 (9:00-10:01 PM, ET/PT) on the CBS Television Network. Photo: Ron P. Jaffe/CBS ©2013 CBS Broadcasting, Inc. All Rights Reserved.

Pictured: Eric Christian Olsen (LAPD Liaison Marty Deeks), LL COOL J (Special Agent Sam Hanna), Barrett Foa (Tech Operator Eric Beale), Renée Felice Smith (Intelligence Analyst Nell Jones), Daniela Ruah (Special Agent Kensi Blye) and Chris O'Donnell (Special Agent G. Callen). Callen goes undercover at a prestigious high school after a 15-year-old hacker compromises terrorist missions, on NCIS: LOS ANGELES, Tuesday, Oct. 29 (9:00-10:01 PM, ET/PT) on the CBS Television Network. Photo: Ron P. Jaffe/CBS ©2013 CBS Broadcasting, Inc. All Rights Reserved.

Pictured: LL COOL J (Special Agent Sam Hanna), Barrett Foa (Tech Operator Eric Beale), Renée Felice Smith (Intelligence Analyst Nell Jones), and Daniela Ruah (Special Agent Kensi Blye). Callen goes undercover at a prestigious high school after a 15-year-old hacker compromises terrorist missions, on NCIS: LOS ANGELES, Tuesday, Oct. 29 (9:00-10:01 PM, ET/PT) on the CBS Television Network. Photo: Ron P. Jaffe/CBS ©2013 CBS Broadcasting, Inc. All Rights Reserved.

Pictured: Renée Felice Smith (Intelligence Analyst Nell Jones). Callen goes undercover at a prestigious high school after a 15-year-old hacker compromises terrorist missions, on NCIS: LOS ANGELES, Tuesday, Oct. 29 (9:00-10:01 PM, ET/PT) on the CBS Television Network. Photo: Ron P. Jaffe/CBS ©2013 CBS Broadcasting, Inc. All Rights Reserved.