Gary Sinise Unit Chief Jack Garrett Actor Alana De La Garza Clara Seger Actor Daniel Henney Matthew Simmons Actor Tyler James Williams Russ "Monty" Montgomery Actor Annie Funke Mae Jarvis Actor Kelly Frye Guest Star Cliff Simon Guest Star Ezra Dewey Guest Star Autumn Reeser Guest Star Declan Whaley Guest Star Ron Melendez Guest Star John Minch Guest Star Victor Rivers Guest Star John Getz Guest Star Rahnuma Panthaky Guest Star Atif Hashwi Guest Star Matt Miller Guest Star Pritesh Shah Guest Star Brenda Bakke Guest Star Andy Wagner Guest Star Mark Gordon Executive Producer Erica Messer Executive Producer, Writer Nicholas Pepper Executive Producer Adam Glass Writer Erica Meredith Writer Christopher Barbour Writer Tim Clemente Writer Larry Teng Director Daniele Nathanson Writer Matthew Lau Writer Rod Holcomb Director Laura Belsey Director Matt Earl Beesley Director Jeremiah S. Chechik Director Jeannot Szwarc Director Alec Smight Director Rob Bailey Director Tawnia McKiernan Director Colin Bucksey Director