'......can be seen as other than an airmanship question. Meanwhile, no-one is persuading anyone'
A 'question' perhaps. Which is very far indeed from 'beyond any doubt whatsoever'.
NOT POSITIVELY DETERMINED can be the only finding. Perhaps it's just that, by declaring 'Gross Negligence', MoD is able to wriggle off the hook of liability for corporate manslaughter and the costs thereof?