Clearly there is a connection, if Eurofighter two thousand was available earlier  then they the plan for replacing  er some of the aircraft in the R A F's front line er could be adjusted accordingly erm  but it's not a sort of direct one for one er if the  part of the programme slips a year the jaguar must go on an extra year because within the R A F's  overall plans for its er fleet replacement there is a certain degree of flexibility an and precisely which point the jaguars get replaced is er a judgement between them and their three.