[@Sigma] Ok, I got an aircraft for ya, the F-66. It'll be readily available for you to start with. 

And from my gathering, Most history was lost.. but obviously some had to survive to form the basis of certain ideals like with my nation. I doubt anyone would ever know the full scope and scale of what the world was but mere fragments of the past. The NAU, although it has certain base documents that made the core of its operating system, there is no record of who they fought, what the world was really like.. etc etc.