After setting of Contract parameters and encoder adjustment you should check the run direction with the ERO-Botton.

To check that this was not so, the experiment was repeat six months later when the Earth was travelling in the reverse direction on the opposite side of its orbit.

When the check for seeing a sneaked opponent is being done, observer's field of view is reduced (for the purpose of checking this one opponent) by 50%, 40%, 20% and 0% depending on the look direction.