Quote
Originally posted by airforce:

Residents said the unannounced knock at the door at 1:30 a.m. may be the reason why the tragedy happened.
Onward and upward,
airforce [/QUOTE]

Ya think?! Someone beats on my door at 0130 and I'm answering with gun in hand too. Whoever it is better be announcing who they are, loudly and clearly.

I would not shoot through the door or at all without clearly identifying a threat, but the first part of threat reduction and deescalation begins with the potential target identifying itself.