Systems and methods use cameras to provide autonomous navigation features. This is achieved in that the outer andor inner surface of the frame is formed, in each instance, by a flat metal frame, wherein an insulation body is positioned between the frame elements, using sandwich construction. Upon the upper rear portion of the pliers’ upper jaw’s head there is formed a protrusion that forms a striking surface and a hook and claw which can be used as a spanner for rocker lug type and similar fire hose couplings. A cell may be in focus or it may not be in focus.