The invention is directed to a dynamically reconfigurable network comprising a plurality of nodes having respective transmitters and receivers for transmitting and receiving respective signals to and from one another. The computer program directs aircraft navigation using accelerometer generated coordinates of altitude, latitude, longitude and distance travelled. This display and data entry format is especially applicable to the firing of mortars, allowing a representation of both where the mortar currently is and where it is projected to land. Upon receiving a gain-adjustment-completion signal for notifying completion of gain adjustment using the adjustment optical signal from the reception-side optical amplifier, the optical transmission device controls the transmission of the adjustment optical signal to be stopped. Pumps having various elementary cells are contemplated, including two-celled pumps disposed within a single chamber and pumps having greater numbers of cells wherein each cell is disposed within a different chamber.