C. Thomas Howell as Chief Grasso

Judd Nelson as Agent Wilson

Jason London as Cale

Serah D'Laine as Carol Milner

Robert Carradine as Dr. Wexler

Alexander Mendeluk as Ryan

Andrew Amani as Infected Worker #1

Brett Beoubay as Elevator Passenger

Darren Arnaud as SWAT Guy

Henry Boger as Police Heli Pilot

Paul Boger as Infected Worker #2

Robert Bjorklund as Lobby Security Guard

Chuck Bush as Det. Leache

Courtney Brin as Susan Verris

Edrick Browne as Tony

John Chambers as Williams

Serah D'Laine as Carol

Seth Duhy as SWAT Guy

Ted Ferguson as Old Accountant

Brandon Duracher as Agent Riley

Nikki Hester-Jose as Woman on Stairs

Raymond Hebert as Business Man

Chris Fontana as Infected Worker #3

Jeff Jonas as Officer Burns

Zachariah Jay as Doctor

Ira Kortum as Homeless Drunk / Extra

Dominick LaBanca as Security Guard

Jerry Leggio as Dr. Andzari

Dave Major as SWAT Sniper

Mike Mayhall as Officer Daves

Dunbar Merrill as Eric

R.D. Miller Jr. as News Anchor

Anri Mims as Sheb

Lochlyn Munro as Lohan

Johnny Rock as George

Lauren Norfleet as Clarissa

Lauren Roehm as Day Care Worker

Stan Spry as SWAT Leader

Chad Stensgaard as Cop

Aaron Phillip Stark as Dispatcher

Darcel White Moreno as Ann

Alicia Leigh Willis as Mandy

Arielle Stephens as Allie

Patty Yu as June

Teri Wyble as Nurse

Ismail Abdur-Rahman as Extra

Chandler Adams as Extra

Mia Allen as Extra

Kale Arndt as Extra

Cosette Brown as Extra

Ryan Burris as Extra

Sam Dietz as Extra

Alacias Enger as Extra

Naylene Frunk as Extra

Christopher J. Greene as Extra

Ginger Henington as Extra

Elena Kampouris as Extra

Ivy Kampouris as Extra

Estin Kigeiz as Extra

Josh Kiser as Extra

Kyle Lang as Extra

Jamie Mallory as Extra

Kim Mann as Extra

Lee Potter as Extra

C. Erica Potter as Extra

Cathin Yang as Extra