While wandering around in the world or towns, do the following to get an early heads up on enemies, encounters, or learn who is nearby. Keep tapping [V.A.T.S.] while searching at all angles. If there is something out there, you will get the V.A.T.S. zoom in with a low score, which allows you to know what is there and thus you can figure out a plan of attack or how best to sneak around it.