Legs have these big blood hoses in them that don’t respond well to getting holes poked in them, a shot to the leg is deadly force. Also easier to miss a leg since it’s a smaller target and may be moving.

A person without a gun may still present a threat of death or grievous bodily harm. If holding a gun and taser, an officer may attempt to use one in a stressful situation and squeeze both triggers because we’re all stupid meat machines.