Well, look. After numerous pages of continuing with this thread, maybe an observation would be in order.
1. There are reasons for not firing warning shots in civilian SD situations. They've been stated numerous times and are valid.
2. It' would be shear negligence not to have rules of engagement in military or private security guard duty situations (including warning shots) for obvious reasons.
Replying to point #2 (the subject of the thread) with an argument pertinent to point #1, which isn't relevent to the main point, is a little silly, isn't it?
Just my thoughts (observation) on the matter.