However moving an entire fortress was consuming a lot of fuel. Making risky refueling from home necessary. Which was done by eeveelution who were often killed on the way to the flying fortress. By the time it was figured out how to close the portal to the angels’ realm. Almost all the angels were dead. Since the angel realm turned out to be much smaller then inicialy thought. A pocket dimension of sorts. The few surviving angels were spared with the flying fortress serving it’s purpose being intentionaly crashed close to the portal’s opening. The strongest of pony and kirin mages then helped close the portal for good. Helping save the day from a extradimensional war. Or more accurately, covering up it’s surprisingly short lived existence.