That or welcome 15 is another I ' ve heard people using <| sep |> I applaud your realitybased answer to such a ridiculous question . <| sep |> it takes the squad HP overall and applies damage over time . Incorrect . It takes the damage of the aura and divides it by the current total durability of the squad , which gives you a CHANCE to shoot down one aircraft , every second . Example Squad has 5 aircraft with 600 durability each . AA aura does 100 DPS . 100 3000 0 . 0333 . So , in that example , you ' d have a 3 % chance to shoot down one aircraft every second . This is why ships with low AA ratings are nothing more than parking lots for enemy aircraft . Furthermore , the maximum number of aircraft you can shoot down per second is 1 , per squad .