Some states require a CCW holder to retreat when there is not an immediate threat to the person with the conceal carry. Of course in this case there was a clear threat to many people, and there is probably a good argument that the conceal carry was threatened as well.
Lives in garage:
2004 Red Jeep TJ "X", big tires, suspension, stereo delete, dent in cowl.
1982 Red Jeep Scrambler, small block chevy on 35's.
"Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety." -Benjamin Franklin