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 Joe Mantegna Guest Star Keong Sim Guest Star Nora Rothman Guest Star Austin Sanders Guest Star Scott Alin Guest Star Doua Moua Guest Star Eck Stone Guest Star Jerry O'Donnell Guest Star Conn Barrett Guest Star Fawnda McMahan Guest Star Austin Brooks Guest Star Laura Carson Guest Star Sydney Viengluang Guest Star Christopher Naoki Lee Guest Star Scott Ly Guest Star Mark Gordon Executive Producer Erica Messer Executive Producer, Writer Nicholas Pepper Executive Producer Colin Bucksey Director