Is this normal?

[Drago Sinio]

Last night one of my needlejet interceptors scrambled to defend a nearby allied base. It was in my seabase adjacent to my pact brothers coast, about three squares from the base it defended.

I dont think I have ever seen that before.

[The Commodore]

It's happened before, for me. Not often, but it has happened.

[Cybergod]

I think it's quite normal since Pact Brothers are meant to be like a family coordinating attacks and defences between each other, which seems to include you own interceptors acting on your Pact's side. I even once had a Pact's interceptor come in to help my poor little former that got into the way of Santiago!