This aircraft had a unique (as far as I know) pitch trim system. The entire vertical fin 'tilted' forward and back thereby adjusting the fixed horizontal stab.
Never seen this before or since on any aircraft, anyone know the reason (s) why Lockheed designed it this way?
I think you will find that the same type pitch trim system was used on the Lockheed XF-90, which was also a Kelly Johnson design. It was simple and effective, which Kelly liked.