А ничего, что с 6ой редакции кавер вообще теперь не у отрядов, а помодельно?
Ну и:
Sometimes, a target unit will only be partially in cover, with some of its models in cover and some not. In this case, you have a choice: your unit can either shoot at the squad as a whole, or you can declare that they will Focus Fire on the enemies who are less hidden.
Это как бы из определения фокус фаера.