A fleet of Navy ships are forced to do battle with nefarious aliens after a well-intentioned NASA signal aimed out towards their homeland sends them out on a destructive path towards Earth.
| Taylor Kitsch | ... Lt. Alex Hopper |
| Alexander Skarsgård | ... Cmdr. Stone Hopper |
| Rihanna | ... PO Cora "Weps" Raikes |
| Brooklyn Decker | ... Sam |
| Tadanobu Asano | ... Capt. Yugi Nagata |
| Hamish Linklater | ... Cal Zapata |
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| and |
| Liam Neeson | ... Adm. Shane |
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| Peter MacNicol | ... Secretary of Defense |
| John Tui | ... CPO Walter "The Beast" Lynch |
| Jesse Plemons | ... Boatswain Mate Seaman Jimmy "Ordy" Ord |
| Gregory D. Gadson | ... Lt. Col. Mick Canales |
| Jerry Ferrara | ... Sampson JOOD Strodell |
| Adam Godley | ... Dr. Nogrady |
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| Rico McClinton | ... Capt. Browley |
| Joji Yoshida | ... Chief Engineer Hiroki |
| Louis Lombardi | ... Bartender |
| Norman Vincent McLafferty | ... Old Salt |
| Stephen C. Bishop | ... JPJ OOD |
| Dante Jimenez | ... JPJ XO Mullenaro |
| Daven Arce | ... JPJ Helmsman |
| Ralph Richardson | ... JPJ Starboard Gunner |
| Biunca Love | ... JPJ BMOW |
| Michael Sherman | ... JPJ JOOD |
| Austin Naulty | ... JPJ Fireman |
| Patricia Brown | ... JPJ Fireman |
| Gregory Harvey | ... JPJ Fireman |
| James Rawlings | ... JPJ SCAT |
| Andrew Serpas | ... JPJ Armorer |
| Damien Parker | ... JPJ Helibay Sailor |
| Carson Aune | ... CIC Gunner |
| Doug Penty | ... CIC Watch Supervisor |
| Josh Pence | ... Combat Systems Coordinator |
| Jason Henderson | ... Radar System Controller |
| Brint Terrell | ... Chart Table Plotter |
| Brad Faucheux | ... Chart Table Log Keeper |
| Dustin J. Reno | ... Electronic Warfare Supervisor |
| John Schmotzer | ... CIC Watch Officer |
| Peter Berg | ... JPJ 2nd Gunner |
| Jonathon Groves | ... JPJ Port Gunner |
| Lloyd Pitts | ... JPJ Port Gunner |
| Ryan Tinio | ... JPJ Radar Op |
| Allie Sillah | ... JPJ Lead Helmsman |
| John Santiago | ... JPJ Switchboard Operator |
| Kiley Margeson | ... Gun Console Operator |
| Jeffrey Johns | ... Surface Warfare Coordinator |
| Esther Solomon | ... JPJ CIWS Operator |
| Kevin Garlington | ... JPJ Air Warfare Coordinator |
| Anthony Czumalowski | ... JPJ Sailor |
| James Hadde | ... JPJ Sailor |
| Pat Lancaster | ... JPJ Sailor |
| Jordan Kirkwood | ... JPJ Sailor |
| Jane Dubiel | ... JPJ Sailor |
| John Weaver | ... JPJ Sailor |
| Mark Lindquist | ... JPJ Sailor |
| Philip Cody Neilson | ... JPJ Sailor |
| Dane Justman | ... Sampson OOD |
| Dustin Watchman | ... Sampson Helmsman |
| Drew Rausch | ... Sampson XO |
| Ryland Reamy | ... Sampson CIC TAO |
| Donald Willcutt | ... Sampson Starboard Lookout |
| Eli Miranda | ... Sampson Boatswain |
| Joshua Demuth | ... Sampson Port Lookout |
| Thomas Grieser | ... Sampson Watch Officer |
| Chris Darling | ... Samson OS DA |
| Tyrone Gregg | ... Sampson Gunner |
| Brian Hirono | ... Myoko OOD |
| Yutaka Takeuchi | ... Myoko XO |
| Nobuharu Harada | ... Myoko JOOD |
| Masaomi Uchida | ... Myoko Helmsman |
| Kyle Ken Shimabukuro | ... Myoko Radar Operator |
| Masashi Takekawa | ... Myoko Starboard Lookout |
| Hyoe Joe Takahashi | ... Myoko BMOW |
| Rick Hoffman | ... Chairman, Joint Chiefs of Staff |
| Stephen Baldini | ... State Department Official |
| Bill Stinchcomb | ... Marine Commandant |
| Bruce Mandell | ... Army Chief of Staff |
| Gary Grubbs | ... Air Force Chief of Staff |
| David Jensen | ... NASA Director |
| Mike Meldman | ... Cmdr. Meldman |
| Hunter Meldman | ... Ensign |
| George Arine | ... Japanese Vice Admiral |
| Bill McMullen | ... JPL Supervisor |
| Joe Chrest | ... JPL Controller |
| Benjamin Lloyd | ... Officer Blake |
| Billy Slaughter | ... BIP Technician |
| Griff Furst | ... BIP HQ Controller #2 |
| Terri Battee | ... BIP Journalist |
| Angelo Denova | ... BIP Journalist |
| Colby Parker, Jr. | ... BIP Scientist |
| Geoff Clayton | ... BIP Scientist |
| David Kors | ... BIP Scientist |
| Christopher McGahan | ... Cal's Jr. Tech |
| Kerry Cahill | ... Cal's Female Colleague |
| Liz Wicker | ... Female Newscaster |
| Michelle Arthur | ... British Newscaster |
| Natalia Castellanos | ... Spanish Newscaster |
| Dan Cooke | ... Hawaiian Newscaster |
| Leni Ito | ... Japanese Newscaster |
| Jay Jackson | ... American Newscaster |
| Jackie Johnson | ... Herself |
| Frank J. Doyle | ... Soccer Ref |
| Robin Atkin Downes | ... Soccer Announcer |
| Zach Selwyn | ... Soccer Announcer |
| Leonard Rogers | ... Japanese Goalie |
| Citizen Cope | ... Singer at Bar |
| Evan Bernard | ... Fat Guy at Bar |
| Cora Yamagata | ... Convenience Store Owner |
| Frank Cassavetes | ... Grizzled Gunner |
| Tom McCurdy | ... Adm. Shane's Aide |
| Robert Hotalen | ... Marine Aide |
| Rami Malek | ... Watch Officer |
| Ray Mabus | ... Reagan CO |
| Marissa Nordhelm | ... Reagan Radar Operator |
| Ronald Chavez | ... Cmdr. Rivera |
| Legrand Strickland | ... Wounded Warrior |
| Michael Vernon | ... CAREN Technician |
| Jason Wilken | ... Director of Rehabilitation |
| James Ward | ... Old Salt |
| Philip Trifilo | ... Old Salt |
| William Powers | ... Old Salt |
| Donald C. Dailey | ... Old Salt |
| William I. Carr | ... Old Salt |
| Dennis M. Keating | ... Old Salt |
| Garrett Lynch | ... Old Salt |
| Wallace Mackensen | ... Old Salt |
| William Long | ... Old Salt |
| Edward Drew | ... Old Salt TAO |
| John E. Culkin | ... Old Salt RO |
| Hiram Fong, Jr. | ... Old Salt Navigator |
| Larry Wegger | ... Old Salt WO |
| Dallas Kane Hewitt | ... POFC Dallas |
| Adam Sibley | ... SCAT Team |
| James Rish | ... SCAT Team |
| George O'Hanlon | ... Tourist Guide |
| Wesley Phelps | ... Tourist Kid |
| Marcus Lyle Brown | ... Regent Land Commander |
| Kyle Clements | ... Regent Sea Commander |
| Kevin Kearns | ... Jimmy |
| John Bell | ... Angus |
| Conor McCarry | ... Ronnie |
| Dylan Gillooly | ... Thom |
| Adrian Bellani | ... Ens. Chavez |
