The Texan Ninja wrote::
You are walking to your car at night and some thug walks up with a knife and demands money. You draw your weapon and the BG drops the knife and takes off running.
First I'm calling 911, because I'm going to assume (even though not likely) he called saying the story went the opposite way; I drew down on him, he pulled a knife trying to defend, and managed to get free and away.
I'm going to keep my gun out until I'm sure the danger is over, and before the police arrive it will be on the seat of my car, or somewhere semi-away and not on my person. When they arrive, my hands will be visible, and I will calmly say, Officer, I was just robbed (or attempted) by a man that just ran away. I have a CHL and my weapon is in _____ location. I will have my DL and CHL on my person (as we all should )
I am going to give my side of the story to police, and include descriptions and last known location of the bad guy.
*edited to add, I will NOT touch the knife under any circumstance ... hopefully it has his prints, and would only get in my car and move if danger was still present, but not CHL actionable.