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 Sherry Stringfield Guest Star Kelly Frye Guest Star Ezra Dewey Guest Star Declan Whaley Guest Star Ron Melendez Guest Star Laura Allen Guest Star Treva Etienne Guest Star Sofia Rosinsky Guest Star Kingston Foster Guest Star John Antonini Guest Star Leslie L. Miller Guest Star Yvans Jourdain Guest Star Constance Ejuma Guest Star Joberde Metellus Guest Star Britt Baron Guest Star Skye Barrett Guest Star Noble Jones Guest Star Mark Gordon Executive Producer Erica Messer Executive Producer, Writer Nicholas Pepper Executive Producer Felix Alcala Director