Guest Stars: Lucy Davis as Doctor Janice Brown | Robert Neary as Travis Cook | Seana Kofoed as CEO Virginia Wilson | David Tom as Maple | Marcus Henderson as Stu | Priscilla Barnes as Mrs. Skalbe | Ally Maki as Marie Manna | Tony Gonzalez (2) as NCIS Special Agent Tony Francis | Tatiana Chekhova as Reena Deesie | Alex Stemkovsky as Bodyguard | Nicholas Sean Gomez as Nicky Jones

Guest Stars: Kelli Williams as NCIS Special Agent Maureen Cabot | Margo Harshman as Delilah Fielding | Gregory Harrison as Navy Captain Roland Ebbakey | Brad Benedict as Navy Lieutenant Nick Rossmore | Kelly Frye as Navy Lieutenant Kara Gifford | Ryan Kennedy (1) as Former Navy Petty Officer First Class Peter Woodruff | Andrew Hawkes as Metro P.D. Detective Dan Campbell | Alisha Boe as Farrah Meyers | Dante Swain as Navy Petty Officer Second Class Adam Meyers | Melissa Greenspan as Mother | Jamie Bamber as NSA Attorney Jake Malloy

Guest Stars: Jessica Walter as Judith McKnight | Richard Riehle as Walt Osorio | Christopher Gartin as Jason Tupperman | Todd Louiso as Lyle Waznicki | Matthew John Armstrong as Navy Seaman Michael Hayes | Nick Toren as Dwight's Father | Paul Mabon as Lucas' Father | Nate Scholz as Former Navy Seaman Todd Bennett | Joe Pistone as Prison Guard | Lauren Bray as Makaela Hayes | Iris Almario as Natalie Tupperman | Mataeo Mingo as Lucas | Zeb Sanders as Dwight | Jonathan Salisbury as Stephenson

Guest Stars: Jon Cryer as Doctor Cyril Taft | Scottie Thompson as Jeanne Benoit | Joel Gretsch as NCIS Special Agent Stan Burley | David Chisum as Doctor David Woods | Annie Tedesco as Navy Doctor Lieutenant Liz Cortland | Gabriel Hogan as Navy Seal Commander Pete Grady | Katie Roberts as Navy Surgical Tech Ensign Joni Ryan | Omono Okojie as Bahar Tambai | Noel Arthur as Ramses | Sarah Jane Mackay as Rose | Akuyoe Graha as Old Woman/Zayah

Guest Stars: Jamie Bamber as NSA Attorney Jake Malloy | Salli Richardson-Whitfield as Carrie Clark | Jeremy Ratchford as Baltimore Police Detective Ramsey Malone | Tug Coker as Assistant State's Attorney Alan Wyner | Kelly Blatz as Navy Petty Officer Third Class Kyle Friedgen | Erinn Westbrook as Hanna Friedgen | Tom Choi as Navy Commander Bradley Hall | Billy "Sly" Williams as Francis "Cheech" Del Conte | Miles Wood as Detective James Green | Lindsey McKeon as Taylor Matthews | Pat Harvey (1) as ZNN Reporter

Writer: Frank Cardea, George Schenck

Guest Stars: Joe Spano as Senior FBI Agent T.C. Fornell | Lindsay Wagner as Barbara Bishop | Ryan Doom as George Bishop | Patricia Bethune as Former Army Sergeant Richard Doogan | Harry Van Gorkum as Alton Brinkman | Jack Mikesell as Navy Lieutenant Alex Quinn | Stuart McLean as Malcolm Turro | Eric Nelsen as Sean Quinn | Scott Roe as Marine

Guest Stars: Scott Bakula as NCIS Special Agent Dwayne Pride | Lucas Black as NCIS Special Agent Christopher Lasalle | Zoe McLellan as Special Agent Meredith "Merri" Brody | Shalita Grant as Sonja Percy | Tyler Ritter as Luca Sciuto | Lev Gorn as Russian Counselor Anton Pavlenko | Bryan Batt as Blye CFO Dalton Greenbrick | Cassidy Freeman as Eva Azarova | Alex Quijano as Blye Head of Security Blake Huxley | Wendy Davis (1) as Navy Captain Kensington Bloom | Jamie Gray Hyder as Navy Petty Officer First Class Heidi Orr | Abraham Amkpa as Navy Petty Officer First Class Feliz Kane | Ilia Volok as Burly Man | Samran Chakrabarti as Jenner Blye

Guest Stars: Mike Bradecich as Former NSA Analyst Adam Connors | Shi Ne Nielson as FBI Special Agent Daisy Milner | Stephen Snedden as Jim Murphy | William Charlton as Metro P.D. Jeff Katz | Jean Paul San Pedro as Dan Dacey | Winston Story as Manny | Christine Garver as Tiffany Leonne | Shak Ghacha as Dominick Rubin | Devin McGinn as Stewart Dorfman | Leonard Robinson as Metro Police Officer Jackson | Morgan Obenreder as Navy Seaman Mary Burk | Anna Claire Sneed as Jane Murphy | Jackie Johnson as ZNN Meteorologist Chelsea Mills

Writer: Scott J. Jarrett, Matthew R. Jarrett

Guest Stars: Maya Stojan as Meredith Ragen | Greg Serano as Jalen Washington | Henderson Wade as Sam Harper | Tim Conlon as Jerry Grossman | Brett Rice as Captain RJ Hammond | John DeMita as Nancy Admiral Jorge Morales | Aaron Hendry as Bob Mugford | Keston John as Mark Dominquez | Dahlia Salem as Maria De La Rosa | Matthew Brenher as Mattias Groller |

Co-Guest Stars: David Paladino as Retired Navy Senior Petty Officer Diego De La Rosa

Guest Stars: Leslie Hope as SecNav Sarah Porter | Christina Chang as Valeri Page | Bruce Thomas as Richard Porter | Caitlin Carver as Megan Porter | Jake Borelli as Dean Campbell | Rene Ashton as Justine Wolfe | Brendan McCarthy (1) as Owen Dixon | Herve Clermont as Christian Brodrick | Joe Spano as Senior FBI Agent T.C. Fornell

Special Guest Stars: Jon Cryer as Dr. Cyril Taft |

Guest Stars: Scottie Thompson as Jeanne Benoit | Laura San Giacomo as Doctor Grace Confalone | David Chisum as Doctor David Woods | Michael Cram as ATF Special Agent Earl Kitt | Jodi Harris as Catherine Taft | Alice Hunter as Navy Petty Officer First Class Janet Shor | Walter Fauntleroy as Navy Petty Officer First Class Lamar Finn | Max Williams as Louis Shekian (as Max E. Williams) |

Co-Guest Stars: Catherine Kamei as Nurse Ella

Guest Stars: Margo Harshman as Delilah Fielding | Lachlan Buchanan as Navy Petty Officer Second Class James Muldoon | Shannon Lucio as Amy Harrison | Virginia Williams as Leah Ramsey | Saidah Arrika Ekulona as 911 Dispatcher | Connie Jackson as Elaine |

Co-Guest Stars: Scott Peat as Mitchell Grafton | Lazarus Jackson as Falls Church Police Officer