My range back home used to let all of the area law enforcement agencies use parts of the range for practice and qualifying. One day the firearms instructor for the local sheriffs department showed up early and caught me running some drills. Long story short, he was an arrogant s.o.b. and basically challenged me to a little competition. Needless to say he was pretty pissed off and blaming his equipment by the time we were done. (Believe it or not, in my mid-twenties my eye sight was good, my nerves were steady, my mind was sharp, and my hand-eye coordination was spot on.)