Jo gives her a look and shake of her head that questions seriously why she's moved her gun.

"There are a complicated number of things you have to focus on. Pull your gun back up. Use your right hand for pulling the trigger, for controlling your whole gun with that movement. Your left is only used to steady your hand from moving and catch on recoil."

She nods toward the target again. "Aim with your right eye first, but compensate one-fourth or half an inch to the left to make up for your vision. Try a few."