Wylie is a lazy engineer. Landry is a Sergeant specialising in Armour. They have never met but their lives become entangled when Landry must take the tank Wylie designed into combat. Wylie is waiting for his employer to go out of business when he meets another engineer who gives him a disk with the plans for a system that will save his employer. The other engineer is dead moments later leaving Wylie with the disk and credit for the design. Suddenly Wylie is no longer a hack, but the saviour of his company and finds his life is no longer the same.
Unfortunately the movie Best Defense is not yet available on HBO Max.
| Directing | Willard Huyck | Director |
| Writing | Robert Grossbach | Novel |
| Writing | Gloria Katz | Screenplay |
| Writing | Willard Huyck | Screenplay |
| Production | Gloria Katz | Producer |
| Sound | Patrick Williams | Original Music Composer |
| Camera | Donald Peterman | Director of Photography |
| Editing | Sidney Wolinsky | Editor |
| Directing | Louise Jaffe | Script Supervisor |
| Production | Robert Latham Brown | Unit Production Manager |
| Production | Austen Jewell | Unit Production Manager |
| Camera | Elliott Marks | Still Photographer |
| Crew | Everett Creach | Stunt Coordinator |
| Art | R. Chris Westlund | Set Decoration |
| Production | Dianne Crittenden | Casting |
| Art | Peter Jamison | Production Design |
| Art | Bo Welch | Art Direction |
| Costume & Make-Up | Kristi Zea | Costume Design |
| Sound | Gregg Landaker | Sound Re-Recording Mixer |
| Sound | Donald O. Mitchell | Sound Re-Recording Mixer |
| Sound | Rick Kline | Sound Re-Recording Mixer |
| Sound | Frank E. Warner | Supervising Sound Editor |
| Sound | Gary S. Gerlich | Sound Effects Editor |
| Sound | Victoria Martin | Sound Effects Editor |
| Sound | Pat Suraci | Boom Operator |
| Sound | Richard Stone | Music Editor |
| Editing | Martin Cohen | First Assistant Editor |
| Sound | Robin Gregory | Sound Mixer |
| Camera | Laurie Ridley | Still Photographer |
| Crew | Richard Johnson | Special Effects |
