Mr. Aidan O'Driscoll:

I would see that as a risk. The images on the screen come from planes and satellites. However, there was a particular difficulty in that, as the committee knows, Irish weather is what it is and we have much less opportunity to get clear photographs. The imagery on the right of the screen derives, I think, from better use of satellite photographs, oddly enough, because satellites can adapt more quickly to lack of cloud cover, whereas with planes, one must arrange in advance that the plane will fly over on a particular day, and if there is cloud cover, that is it.