We essentially put the pieces on like so, in the following order:
(there's also another 2-pegger that I didn't get a specific shot of, but it goes just a little to the left of this one, on the other side of that round thing.)
There will be one piece left. Just leave it be; we'll be coming back to it later.
Anyway, the end result should look like this:
Also, the parts for the second gun turret are in this issue as well. So go ahead and put that together.
That's it!
