JP Skinner

Mercer

Porter Baldwin

Bobby Galloway (1 episode)

Grit Thorn

Producer

Kelly

Producer

Tracer (8 episodes)

Det. Don Ellis (7 episodes)

Mic Sheridan

The Voice, JR's father

Dr. Chu (voice)

Director

Producer

Marty Cole

Executive Producer

Paul

Ryan Grant (10 episodes)

Alistair (1 episode)

Edward Coventry (9 episodes)

Will "Ghost" Gardner

Director

Writer

Producer

Jerry George

Arlo Turk (5 episodes)

Taylor

Boyle (voice)

Taylor

Maj. Sessions

Mark 'Oz' Geist

Edge

Edge (1 episode)

Taylor

Nathan Mueller (1 episode)

Tom 'Pyro' Roberts

Koz (13 episodes)

SEAL Commander

Young Jack

RIP (1 episode)

Herc Hansen

Big Charlie (1 episode)

Big Charlie Archer (1 episode)

Fletcher Moss (1 episode)

Renault

Luke Dolan (1 episode)

Frank Stevens (7 episodes)

Dan Mateo (1 episode)

Agent Robert Williams

Sam

Hal Lockwood (2 episodes)

Nick Taylor (1 episode)

Sgt. McCall

John Deckard (1 episode)

Dave Burns (1 episode)

Tim Rowe (1 episode)

Jack Campbell

Gerard (1 episode)

Joe Collins

Mack Gerhardt (69 episodes)

Rip

Sylvester Rheinback

Rip (1 episode)

1st Sgt. Sid "Top" Wojo

Agent Billy Cooper (1 episode)

Nathan Grady (1 episode)

Buck Colter

Michael Warner

Joe O'Connor

Bob Keaton (3 episodes)

Jason Kent (1 episode)

Jarrod Malone (1 episode)

Ryan Hollenbeck (1 episode)

Steve Goodrich (3 episodes)

Colonel Breck (10 episodes)

(4 episodes)

Paul

Dan Andrews

(13 episodes)

Curtis Sandoval (1 episode)

Mic

Todd Baxter (1 episode)

Todd Baxter (1 episode)

Larry

Grant (1 episode)

(1 episode)

Waters (1 episode)

Charlie

(11 episodes)

Corporal Henderson

Willie

Luke (1 episode)

Taylor Carr (2 episodes)

Student Council President

Steven