A method for operating a rescue system with a mobile rescue device, in particular a spreading device, a cutting device, or a combined device having a spreading and a cutting function, wherein the mobile rescue device has a base body with a working means, a handle, a controller and an input means arranged at the base body, wherein the input means is configured for the input of control commands into the controller by an operator of the mobile rescue device, wherein an external additional input means is formed, which is structurally independent of the mobile rescue device and coupled or couplable with the controller of the mobile rescue device by means of a data transmission means; the method comprising the method steps: - controlling the work sequence of the mobile rescue device by inputting control commands into the controller by an operator of the mobile rescue device by means of the input means arranged at the base body, wherein via the external additional input means, by means of the data transmission means, external control commands are input into the controller, wherein the external control commands, in addition to the control commands input by means of the input means, control the work sequence of the working means or change the state of the mobile rescue device, characterized in that the controller is configured such that during an operation, the operator inputs control commands into the controller by means of the input means arranged at the base body and, simultaneously, the external control commands are input into the external additional input means by a further person, wherein the external additional input means acts on the mobile rescue device in real time, such that, when a danger occurs, the further person, who maintains the overview, intervenes in the controller, wherein the intervention by means of the additional input means interrupts the work sequence of the mobile rescue device despite actuation of the input means. the method comprising the method steps: - controlling the work sequence of the mobile rescue device by inputting control commands into the controller by an operator of the mobile rescue device by means of the input means arranged at the base body, - controlling the work sequence of the mobile rescue device by inputting control commands into the controller by an operator of the mobile rescue device by means of the input means arranged at the base body, wherein via the external additional input means, by means of the data transmission means, external control commands are input into the controller, wherein the external control commands, in addition to the control commands input by means of the input means, control the work sequence of the working means or change the state of the mobile rescue device, characterized in that the controller is configured such that during an operation, the operator inputs control commands into the controller by means of the input means arranged at the base body and, simultaneously, the external control commands are input into the external additional input means by a further person, wherein the external additional input means acts on the mobile rescue device in real time, such that, when a danger occurs, the further person, who maintains the overview, intervenes in the controller, wherein the intervention by means of the additional input means interrupts the work sequence of the mobile rescue device despite actuation of the input means.