On Sun, 30 Sep 2012 15:09:04 -0400, iBoaterer wrote:

So in your mind he had a knife to use to commit a crime? Damn, that's a
stretch!

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The analysis is really very simple:

- A masked intruder advances towards you with a knife in his hand.

- A knife is a deadly weapon.

- You have a split second to make a decision: Try to outrun them;
Defend yourself (which you are prepared to do); Take a chance on being
attacked with a deadly weapon.

Your choice.