Officer Under Fire's Perpetrator is a remote-controlled range robot that is human-like in appearance, movement, and tactics, and shoots training projectiles at police officers in the range. An Officer Under Fire certified range instructor operates the Perpetrator remotely while watching live footage from the Perpetrator's camera.  Trainees fire real bullets at the Perpetrator, which can fire training rounds at trainees. One of the robot's arms is electronically activated via remote, allowing it to hold and throw objects. This allows firearms instructors to implement decision-based scenario training.