Then yes, by this definition (which I don't agree with), it'd be murder. Technically they fit the motive-opportunity-intent criteria based on what was said earlier. Having said that, while a murder typically has those 3 elements, having those 3 elements does not make it murder necessarily. The reason they had 2 of the 3 is because they were unwillingly dragged into a potential life-or-death situation with myriad elements and variables. This is also why I don't fully buy self-defense. In situations like this, you can have a handbook, plans, designations, whatever...when it's crunch time, all rules are off. Patton said, "A good plan violently executed now is better than a perfect plan next week". I'm just speaking for me. The only time I do not feel threatened is when I see them completely off my property, running like little girls. Hiding behind a building, also on my property, is not threat elimination in my book. If this makes me "liable", so be it. Maybe it's what we need to rethink some policies going now.