Tecumseh,
I respect your opinion - especially on engineering and procurement matters, but in the case at hand, there was no political interference (why would there be?) and the evidence was overwhelming - not only to demonstrate that the Sgt committed a deliberate act of murder (oxymoronic, I know) but also took a considerable number of steps before hand to prepare for it - malice aforethought.
Just by implying that others - VSOs and Ministers - are, in some way, guilty of other crimes has no bearing on this warcrime - and for a crime that is also covered under British criminal law. -and, dare I say, the 10 commandments.