>> How is this useful if you can’t refuel or reload ordnance?
You can. It is true that there are logistics challenges to provide fuel/ammunition to a vehicle that does not have a fixed base (such as an airfield). Similar logistic challenges are solved for tanks.
>> aren’t you a sitting duck for the enemy?
Only until you take back off again. In the event that your airfields have recently stopped existing, that will likely be as soon as you refuel/reload.
You can. It is true that there are logistics challenges to provide fuel/ammunition to a vehicle that does not have a fixed base (such as an airfield). Similar logistic challenges are solved for tanks.
>> aren’t you a sitting duck for the enemy?
Only until you take back off again. In the event that your airfields have recently stopped existing, that will likely be as soon as you refuel/reload.