Lessons? One that comes to mind is to not leave the gun in the car when you get out.
Personal space management comes to mind...
There is NO reason to allow an individual to intrude on ones' personal space the way that criminal did.
1. The criminal was a complete stranger to the defender.
- Don't play the "mistaken identity" game. When they FAIL to acknowledge the fact that you DON'T know them, and yet they STILL stick around, they need to be called out about it immediately, and one needs to prepare for defense IMO.
- Your IMMEDIATE mood change and defensive positioning WILL be detected by the criminal, and they will need to either initiate their assault from a less advantageous position, or leave. Both are to your advantage.
Failure to identify criminal "uniform"
1. If an individual dresses like a low life ghetto trailer trash gangsta wannabe, they will be treated accordingly.
2. Like it or not, individual attire is often chosen to reflect the culture, values, and / or profession of an individual. The attire the criminal wore closely matched the criminal uniform of the day, and amazingly enough, it accurately reflected his culture and potential behavior. He was drunk, HIGH on crack, AND he attempted to assault a citizen. Go figure.
3. Be mindful of what people are trying to say about themselves with the attire they choose to wear. While behavior is the final factor, individual attire can often lead to the need for greater scrutiny.