On display at Planes of Fame Air Museum, this Natter (Adder) replica lies with its nose cone removed to show a battery of 24x73mm Föhn rockets. The partly reusable interceptor powered by a Walter rocket motor and jettisonable solid fuel rocket motors was to be launched from a ramp to intercept bombers. The first VTO launch on 28 Feb 1945 resulted in the death of the test pilot. Due to interest by Himmler, the SS ordered 150 Natters, with 50 for the Luftwaffe. Ten Natters known as K-Maschinen were operationally deployed for Krokus-Einsatz near Stuttgart but never launched by end of the war.