Colin Farrell
Stu Shepard

Kiefer Sutherland
The Caller

Forest Whitaker
Captain Ramey

Radha Mitchell
Kelly Shepard

Katie Holmes
Pamela McFadden

Paula Jai Parker
Felicia

Arian Ash
Corky

Tia Texada
Asia

John Enos III
Leon

Richard T. Jones
Sergeant Cole

Keith Nobbs
Adam

Dell Yount
Pizza Guy

James MacDonald
Negotiator

Josh Pais
Mario

Yorgo Constantine
ESU Commander

Colin Patrick Lynch
ESU Technician

Troy Gilbert
ESU Sniper

Seth William Meier
Officer McDuff

Svetlana Efremova
Erica

Billy Erb
Lars

Domenick Lombardozzi
Wyatt

Maile Flanagan
Lana

Tom Reynolds
Richard

Julio Oscar Mechoso
Hispanic Medic

Karara Muhoro
Nigerian Vendor

Shu Lan Tuan
Korean Wife

Dean Cochran
Reporter #1

Tory Kittles
Reporter #3

Bruce Roberts
Reporter #4

Dean Tarrolly
Newscaster

Mary Randle
Dispatcher

Kimberly Bailey
(voice)

Lanei Chapman
(voice)

Greg Finley
(voice)

Rick Gonzales
(voice)

Tracy Metro
(voice)

Jason Pace
(voice)

Juan Pope
(voice)

Nicole Prescott
(voice)

John Vargas
(voice)

Billy 'Sly' Williams
(voice)

Ruth Zalduondo
(voice)

Ben Foster
Big Q (uncredited)

Jared Leto
Bobby (uncredited)

Mia Cottet
Lu Ann (uncredited)