LJ they may well have done the sums and decided that it would be cheaper to pay out. It all comes down to economics, they will be able to estimate the probability (one in five years maybe?) and compensation £2million? So £4million every 10 years. £1.6 billion for 10 bases, so £160 million for an extra base for 10 years.
Extremely rough figures =
Compensation £4million or £160million for an extra base.
And as you point out there are ways of mitigating the risk by limiting the FJ training areas which sounds quite reasonable
