Bij een schietpartij tussen de DEA, SWAT en een kartel arresteert SWAT-agent Travis Hall een geheimzinnige man. Niet veel later wordt het SWAT-hoofdkwartier door meerdere aanvallen belaagd in een poging de gevangene, die bekend staat als 'The Scorpion' door de tatoeage op zijn rug, te bevrijden. Als Travis erachter komt dat zijn gevangene een undercover agent is die in het kartel geplaatst werd, moeten hij en zijn SWAT-collega's 'The Scorpion' en zijn miljardengeheim veiligstellen.
Nee, helaas is S.W.A.T.: Under Siege nog niet beschikbaar op Netflix in Nederland.
| Camera | Ed Araquel | Still Photographer |
| Camera | Andrew Capicik | "B" Camera Operator |
| Camera | Andrew Capicik | Steadicam Operator |
| Camera | Andrew Coppin | "A" Camera Operator |
| Production | Filip Dobosz | Data Management Technician |
| Camera | Marcus Fung | Second Assistant "A" Camera |
| Camera | Stan Goetz | Dolly Grip |
| Camera | Shane McLeod | First Assistant "A" Camera |
| Camera | Nicholas Pallone | Camera Trainee |
| Camera | Jesse Vance | First Assistant "B" Camera |
| Camera | Henry Zhao | Second Assistant "B" Camera |
| Camera | John Scavarda | Key Grip |
| Camera | Nonda Speaks | Best Boy Grip |
| Crew | Brett Armstrong | Stunt Coordinator |
| Crew | Jason Bell | Stunts |
| Directing | Tony Giglio | Director |
| Writing | Jonas Barnes | Writer |
| Writing | Keith Domingue | Writer |
| Production | Jonas Barnes | Executive Producer |
| Production | Greg Malcolm | Producer |
| Production | Neal H. Moritz | Producer |
| Production | Vicki Sotheran | Producer |
| Editing | Charles Robichaud | Editor |
| Sound | Patric Caird | Original Music Composer |
| Production | Candice Elzinga | Casting |
| Art | Justin Wright | Set Decoration |
| Costume & Make-Up | Andrea Desroches | Costume Design |
| Camera | Michael Balfry | Director of Photography |
| Crew | Ryan Ennis | Stunt Driver |
| Crew | Byron Brisco | Stunts |
| Crew | Lars Grant | Stunts |
| Crew | Mike Mitchell | Stunts |
| Crew | Kevin Haaland | Stunts |
| Crew | Dan Redford | Stunts |
| Crew | Todd Scott | Stunts |
| Crew | Holly Raczynski | Stunt Double |
| Crew | Larry Lam | Fight Choreographer |
| Crew | Ryan Handley | Stunt Double |
| Crew | Tommy Europe | Stunts |
| Crew | Steve Chang | Stunts |
| Crew | Jesse Blue | Stunts |
| Crew | Justin Doran | Stunts |
| Crew | Douglas Armstrong | Stunts |
| Crew | Don Lew | Stunts |
| Crew | Randy Lee | Stunts |
| Crew | Hugo Steele | Stunts |
| Crew | Brennan Walstrom | Stunts |
| Crew | Kye Walstrom | Stunts |
| Crew | Dan Rizzuto | Stunts |
| Crew | Sam Yunussov | Stunts |
| Lighting | Corey Jacques | Gaffer |
| Writing | Robert Hamner | Characters |
