Goodnight Natascha

I've written up the first scenario from the Khalkhin Gol project, giving it the working title of Goodnight Natascha in reference to the Polikarpov R-Z 'Natascha' that is the focus for the game. I've tweaked  a couple of elements including, for example, rating the rear gunner of the R-Z as a 'Dead Eye Dick', which gives him an additional +1D6 when firing. Other than that, I've left it pretty much as play tested, as I'm confident it works well as a game and gives both the Japanese and Soviet players a good chance of success.