He either shot 0 people or between 2 to several billion humans, you prefer to shoot exactly one human? Actually I misinterpreted it, he didn't shoot no one, the double negative from the didn't / no cancels out the n't and the no so we are left with he did shoot one. So depending on how you interpret his sentence he could have shot zero to an arbitrary number of people, seems strange that this could imply improper use of a firearm since it holds true for everybody.