I had to type out my post again, because when I posted it, it said:
ERROR: Are you sure you wanted to do that?
Is anyone else getting this?
Anyway, I said something along the lines of Pearl Harbor not being too difficult to trigger as long as the 2 red lights are active. All of my features have just been the basic one so far but I once got 225X of free spins stake (112.5X of enhanced stake).
The base game reminds me of Misery Mining in that the play area can expand from a small reel set to filling up the screen.