While I certainly understand his grief, anger, and desire to understand what happened, I have to shake my head at his ideas on how he is going to do that, e.g.:
No, I don't think you're 'entitled' to that, sir, and knowing that information won't add to your understanding, other than to give you a person's name to direct your rage.
The military can do a far better job of analyzing the error chain and helping prevent it from reoccurring than you can. Trust that they will.