Shield Bestowal is a passive upgrade to the already potent Advent Hangar Defense, unlockable through research. This allows the Advent Hangar Defense to passively protect nearby structures with shields and said shields regenerating 4 points a second. This bonus does not stack with other hangar's Shield Bestowal ability. It's worth noting that Strike Craft have no shields, and therefore are unaffected by this ability. In order to patch a mangled Anima, you have to dock it until it's fixed. This bonus only affects stationary objects.