It's not for me to speak for Mr Walker.
I fear that the debate above about 'command' is unhelpful. Perhaps Mr Walker might comment, if he is visiting here.
To be fair to Mr Walker, it was not he who introduced any of the hints and talks of missions, etc. He merely advised us of the date of the coroner's court, which I sincerely hope is something which will help him cope with his own personal tragedy, understanding more about his son's tragic passing.
It was the subsequent posters with their talk of 'justice', 'goals' and 'progress in the right directions', but not actually stating what these things actually meant in respect of this accident, that have set hares running.
If you don't clearly state what you are talking about, then people on here will debate what they think you might be talking about. Lack of clarity helps no one and might indeed cause distress to those who lost loved ones in the accident.