In the rules for All-Out Offensive it says "Ships and squadrons from a player's fleet count ships and squadrons from other players' fleets on the same team as friendly, with one exception: a commander's 'friendly' effect can only be resolved by ships and squadrons of that player's fleet."
With this writing I would interpret an upgrade such as "Shields to Maximum" to allow every ship on the Rebel side to regen a shield, regardless of player ownership.
Is this correct? If not, can we get a clarification on what can and can't be used between different player controlled friendly ships?