The Prime Minister says no inquiry into the SAS raid in Afghanistan is needed because he trusts the process and he trusts the Chief of Defence Force.
Granted he has no reason to personally mistrust the Chief of Defence Force, Lieutenant General Tim Keating, but he has every reason to mistrust the process.
There's that old saying that justice must not only be done, it must be seen to be done.
When those who are accused decide if there is a case to answer, justice is nowhere to be seen.
Other arms of the state with immense and inherent power such as police, judges, and even spies are subject to independent scrutiny when complaints are made about them.
Bizarrely, English's answer to that inconvenient parallel was to claim that the Chief of Defence Force was independent because he had not been involved in the Afghanistan operation in question.