On the second light, the sniper would focus his shot, zooming in ready for the kill, on the third light, hewouldfire, killing the person who lit the match.
For Move players specifically, another gun accessory will be the U.S. ArmyTM Sniper Action Rifle for PlayStation Move, with which they can closely match their in-game weapons of choice by removing the detachable scope, rear stock or muzzle.