Different states may have different laws but IMO and in SC, it always comes down to "presumption by a reasonable person of imminent threat of death or great bodily injury. From what I surmise from the video and not your thread description, he was not just sitting in his home and started shooting just because he was scared. If I am not mistaken, he was retreating back into his house and he has video evidence that is indisputable and clearly relates to the presumption of imminent threat under the law. You are insinuating and asking can someone begin their defense with the use of their firearm when they are just sitting in their house and seeing a baggy pants below the knee hoodie type with hands in his pocket and a gangsta swagger coming to your door. No way in my opinion. This case, from what I can get out of the report, is very special and damning to the BGs and vindicates the homeowner big time. I seriously doubt if you will see that kind of evidence in any similar home defense type case.