Movement of a disrupter cannon is arrested by a parachute. The parachute is coupled (e.g., tethered) to the disrupter cannon. Prior to firing the cannon, the parachute is held in a retainer. Movement of the disrupter cannon in response to firing pulls the parachute from the retainer. The parachute deploys and arrests the movement of the disrupter cannon. The retainer protects the parachute prior to firing the disrupter cannon. The retainer may hold the parachute during transport.