I'd prefer to give TD et al the benefit of the doubt. If they are asking questions that are getting too close for the MoD's comfort - then good. Let's face it - we've seen enough rubbish in BOI reports these last few years. And BOIs don't try to get to the root of the cause. Nor do they have any power to do anything except make toothless recommendations. They are often treated with contempt by MoD senior staffs, and juniors are actively prevented from giving relevant evidence - or such evidence is withheld. All this means lessons aren't learned.