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 Matthew Settle Guest Star Crystal Allen Guest Star Brooklyn Silzer Guest Star Asher Angel Guest Star Angélica Celaya Guest Star Jane Santos Guest Star Aaron Behr Guest Star George Tovar Guest Star Matt Miller Guest Star Rob Brownstein Guest Star Brenda Bakke Guest Star Steven M. Gagnon Guest Star Jolene Kay Guest Star Juan Carlos Cantu Guest Star Frank Miranda Guest Star Mark Gordon Executive Producer Erica Messer Executive Producer Nicholas Pepper Executive Producer Christopher Barbour Writer Jeannot Szwarc Director