I think I have to  make the point to you that we  are planning to roughly double  the size of the er airforce equipment programme er between now and the end of the century, a very substantial chunk of that is E F two thousand and its er associated weapon systems and, you know, one has to frankly, take er a view on priorities er in the light of the strategic requirement and given the  er extent of the threat as we see it, the possibility of using  er of taking part in out of area operations in coalitions, that kind of thing, that was the judgement we took er the medium term priorities were such that we couldn't afford the first er stage of A M S A M.