In MD, outside your home, you apparently have a duty to retreat...
http://en.wikipedia.org/wiki/Right_of_self-defense_in_Maryland#Burden_of_Proof_on_Self-Defense
“you apparently have a duty to retreat”
Uh...NO I Don’t!
I have a duty to protect myself!
And I also have no intention of sticking around to answer a bunch of dumb questions. (especially in that neighborhood!)