Aaron Eckhart as Michael Nantz

Ramón Rodríguez as William Martinez

Will Rothhaar as Cpl. Lee Imlay

Michael Peña as Joe Rincon

Bridget Moynahan as Michelle

Noel Fisher as Pfc. Shaun Lenihan

Joey King as Kirsten

Beth Keener as Kathy Martinez

Jessica Heap as Jessy

Cory Hardrict as Cpl. Jason Lockett

Jim Parrack as Peter Kerns

Gino Anthony Pesi as Cpl. Nick Stavrou

Ne-Yo as Kevin Harris

James Hiroyuki Liao as Steven Mottola

Adetokumboh M'Cormack as Corpsman Jibril Adukwu

Bryce Cass as Hector Rincon

Michelle Rodriguez as Elena Santos

Neil Brown Jr. as LCpl. Richard Guerrero

Taylor Handley as LCpl. Corey Simmons

Lucas Till as Cpl. Scott Grayston

Kenneth Brown Jr. as Cpl. Richard Oswald

Jadin Gould as Amy

Joe Chrest as 1st Sgt. John Roy

E. Roger Mitchell as Company Captain

Rus Blackwell as Lt. Col. K.N. Ritchie

Susie Abromeit as Amanda

Brandi Coleman as Cherise

David Jensen as Psychiatrist

Stacey Turner as Reporter on TV

Tom Hillmann as Reporter on TV

Lena Clark as Chris

Jamie Norwood as Flower Shop Employee

Todd Cochran as Command Hangar Marine

Nzinga Blake as Adukwu's Sister

Taryn Southern as Reporter on Beach

James D. Dever as Sgt. Major

Alex Aristidis as Beach Goer (uncredited)

Charlotte Biggs as Emergency Medical Tech. (uncredited)

Ava Bogle as Beach Girl 1 (uncredited)

Grant Case as Marine (uncredited)

Kurt Deville as Marine (uncredited)

Nick Jones Jr. as Marine (uncredited)

Phillip Lawrence as U.S. Marine (uncredited)

Keith Middlebrook as Steve Johinson (uncredited)

Courtney Munch as Marine Crew Chief

Jim Palmer as Crew Chief (uncredited)

Michelle Pierce as Shelly (uncredited)

Michael Wozniak as Beach Dude (uncredited)

Marlon Young as Sergeant Major (uncredited)