Oh man, that must have been awesome!
It was really... big. :-)
It should be noted though, that the Bering/Arctic is maybe not the best place to go to try to see them. It's the weather. Crummy. Clear nights were rare enough that we actually only saw the lights a couple of times over the six month trip. So... it's not like we ever got accustomed to seeing them. But when we did, it was spectacular.