Airwolf - how it ended? [Spoilers are welcome]

People, Hello.

Who remembers, it was a series - Airwolf (heavenly wolf). About the helicopter and his company.

So. Watched three and a half seasons. And threw it away.
But still I wonder - what happened. Found whether Springfellow hawk your brother? Or not? And if there's anything left alive at the end myself? And doth the Archangel?