Fallout 4 settlements

===Defense===
* Measures the apparent defenses the settlement has, based on settlement buildings with defense ratings. Only provided by defenses built at a workshop; mines do not count toward settlement defense rating, even though they can destroy attacking forces if the player character is also present. Some creatures able to be captured using cages (featured in ''[[Wasteland Workshop]]'') also add to the defense rating, such as [[Deathclaw (Fallout 4)|deathclaws]] and [[Yao guai (Fallout 4)|yao guais]].
* Each point of defense lowers the chance of an attack by 1%.
* Each population unit lowers the chance of an attack by 0.5%, in addition to any other defensive value the settler provides.
* Each unit of food and water production at the settlement increases the chance of attack by 0.1%.
* Each edible and/or drinkable item stored in a settlement's workbench increases the chance of attack by 0.1%.
* The minimum chance of an attack upon a settlement per day is 2%, regardless of defenses. The maximum chance is unknown, but assumed to be 100%. Whatever the chance is, a settlement cannot be attacked if it has already been attacked in the last 7 in-game days.
* Dependencies: people, power (with certain turrets and traps)

The defense values do not directly correlate with actual combat efficiency. A Mk. 5 machine gun turret can kill enemies several times faster than a Mk. 1 heavy machine gun turret, but will contribute less to the settlement defense value.