That is precisely why we should keep well clear of anything to do with an investigation run by MoD - serving or mandarin. If you want to know how good these people are at twisting and turning and generally being 'obfuscators par-excellence', have a read of 'Lying in State' by Tim Slessor - not just the Chinook bit but all the other examples he uses. Truly scary!
This one will keep on running.