Guest Stars Sean Murray as Special Agent Timothy "Tim" McGee Brian Dietzen as Assistant Medical Examiner Dr. Jimmy Palmer Michael Graziadei as Chuck Bellamy Young as ATF Agent Melinda Stone Sam Witwer as S Sgt. Rafael Laz Alonso as S Sgt. Washington Stuart Stone as Dillon Adam Hendershott as Josh Erin LeShawn Wiley as Corporal McClain Scott MacDonald as Militia Leader