This mod increases the distance in which you can target NPCs in VATS. This is extremely useful if you are just too lazy to aim, or if you are trying to scope out enemies. It is extremely useful for people who play a lot of RPG games. This is a very large distance increase. The reason for this is that the game is designed in a very specific way. When you target a specific NPC, you are actually targeting a particular location in space. In order for you to be able to target an NPC from a greater distance, you need to have a better weapon.