Officer John "Sully" Sullivan

Skipp Sudduth

Doc Parker / Monte Parker

Michael Beach

Officer Ty Davis, Jr.

Coby Bell

Bobby Caffey

Bobby Cannavale

Jimmy Doherty

Eddie Cibrian

Det. Faith Yokas

Molly Price

Carlos Nieto

Anthony Ruivivar

Kim Zambrano

Kim Raver

Officer Maurice "Bosco" Boscorelli

Jason Wiles

—

Joe Lisi

Alex Taylor / —

Amy Carlson

Guest Star

Gerald McRaney

Fred Yokas

Chris Bauer

Guest Star

Stephen Singer

Guest Star

Joel Marsh Garland

Guest Star

J.D. Jackson

Emily Yokas / —

Bonnie Dennison

Guest Star

Gianna Beleno

Guest Star

Jolie Peters

Guest Star

Erica N. Tazel

Guest Star

Patti D'Arbanville

Guest Star

Veronica Hamel

Guest Star

Alberto Vazquez

Guest Star

Annie Golden

Guest Star

Teagle F. Bougere

Guest Star

Dean Winters

Guest Star

Annie Parisse

Guest Star

Viola Davis

Guest Star

Charlie Day

Guest Star

Savannah Haske

Maritza Cruz / —

Tia Texada

Guest Star

Bill Cwikowski

Guest Star

Frank Raiter

Guest Star

Kristopher Scott Fiedel

Guest Star

Aaron Stanford

Guest Star

Bruce Weitz

—

Bill Walsh

Guest Star

Ed Marinaro

Guest Star

Charlie McWade

Guest Star

Michael Rispoli

Baboo

Ranjit Chowdhry

Guest Star

Sherry Stringfield

Guest Star

Roy Scheider

Ricky Ball

Godfrey

Guest Star

Candy Buckley

Guest Star

Michael Lerner

Val

Vanessa Ferlito

Guest Star

Matthew Beisner

Sasha Monroe / —

Nia Long

—

John Bolger

Grace Foster / —

Cara Buono

Brandan Finney

Josh Stewart

—

Lisa Vidal

—

Sakina Jaffrey

—

Lonette McKee

—

Charles Haid

—

Manny Perez

—

Brad Beyer

—

Jon Seda

—

Tawny Cypress

—

James Rebhorn

John Miller

Aidan Quinn

—

Anson Mount

—

Wyclef Jean

—

Mia Farrow

—

Wendell Pierce

—

Anne Twomey

—

Tim Kang