Oberstleutenant Georg - Hermann Greiner.

Hello.
I've a couple of questions to Herr Greiner.
I would like to know if the hes known Hans Dieter Frank. I'm in contact with the family of a wireless operator who died in a Lancaster crash. This Lancaster was shot down bij Frank and the family wants to know what kind of person that Hans Dieter Frank was. So I'm in search for somebody who has known him. I have also a couple of questions for myself. Did he have a special tactic to shoot down enemy aircraft? And what did he tought of the capabilities of the messerschmitt bf-110 and did he have mutch resistance of the bombers he schot down and how has he dealed with this?

I understand that he's getting older and that everything is getting harder for him, but I would really like to contact him to awnser the question from the wireless operators family.
Regards Mike