How do you install under armor visors on a helmet?

The wise rider typically purchases a helmet with the intent to attach it to his HEAD. Unfortunately, far too many brain injured riders had secured their helmets to some 'out of the way' point on their bike when they discovered that their skill alone was insufficient to protect their heads from impact. A helmet should be attached to the HEAD using the manufacturer's provided chin strap. Avoid aftermarket modifications as they have been shown to fail at the critical moment.