A group effort between Bolkow, Heinkel, and Messerschmitt to create a VTOL interceptor for the German federal Defense Ministry, though Heinkel left in 1964 during development, there were two 101C prototypes the X-1 which crashed during VTOL tests and the X-2 which actually reached it's supposed Mach-2 speed, though the 101C was part of 3 other designs it's just that the 101C actually flew (activator 1 to rotate engine nacelles and inatke cover, activator 2 for fuselage lift jets, INSTRUCTIONS: point the naclles vertical and activatre fuselage jets, no harsh manuevers at this point only tiny taps of up and down try to get high up in the air turn off the fuselage jets and then rotate back down so the nacelles are horizontal, counter the downward pitch and then let it gain enough speed to pull up afte that it's smooth flying)