So what is this here? We've got a couple of guys fighting.

It was just a concept, very early, sort of like previous stuff, exploring character tones, and that's the Xi'an fighting the Vanduul.

The helmets, what are these helmets here?

These were just Xi'an helmets that I was concepting out. Because I had done a sketch of the Xi'an fighter and bomber, but before I moved on to detailing it, I thought it would be good to get sort of a style of the helmets and then think, okay, how does this look, before jumping into finalizing and detailing out all the bits for the ships.