@Jeffrey_Smith @Katrags Yes, they can. But the facts in that case appear to be quite different than the facts in this one.
In Florida's law, they have to reasonably believe deadly force is "necessary to prevent imminent death or great bodily harm to themself or another".
@LouisIngenthron @Jeffrey_Smith @Katrags The problem is, in Florida the standard for determining whether a shooting is justified as self-defense is subjective—not that a reasonable person would fear immanent bodily harm in the situation, but that the individual shooter was afraid, however irrational his fear might have been. It makes it very difficult to bring charges.