Anyone know a good asset for space flight (1st person)?

I'd like to have a space flight component in my game and have been messing around with the controls for it but always like assets if they are easy to use and good.

Does anyone know of a good asset to simulate 1st person space flight with configurable levels of realism (or even just arcade style mode?)

One that has AI would be even better (AI that has the ability to chase the player, dodge, etc.)

And when I say space flight, think Wing Commander style or Tie Fighter from days past.

Thanks!