The X captures a tank, while a triangletree swings into the frame. Everything that happens here is in the first person... i.e. you are X. Don't be scared, because everything is always first person... every view through a telescope, of blank skies or gravity blinks or flaming comets or angel's feet or flying saucers or exploding ancient red galaxies that might not still be there... you are always X.
It was up to me to make sure that the gunsight displays worked.