Just stumbled across this by accident while looking for a prototype AT jet marketed during the late '80s (I still haven't found it). IIRC, this doc was shared here on the forum before, but I can remember when or where.
https://thetwilightwar.weebly.com/up...s_02-01-12.pdf
The creator is James Langham, a member of this forum. I think he's consulting on Free League's v4 as well.
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