Nick, while we are on the subject of questions on the S 92, the presentation you gave us at the SARForce conference showed the tail rotor on the starboard side in the 'tractor' position - is there a particular reason for this? I was given to understand that the decision on which side to put the TR on a helicopter was trading off the desire for uninterrupted airflow into the TR with the undesireable downwash (from the TR) forces on the vertical stabiliser. Certainly most helos have pusher, rather than puller TRs so is there another reason for selecting the puller option?