"Flight of the Intruder" is a must-have for any retro flight simulation collector, and pays enormous respects to Vietnam aviators (i.e., Col Chuck DeBellevue, an F-4 Phantom Weapon Systems Officer/"Guy in Back" and Vietnam ace who commanded my ROTC detachment from 1995-1998). Whoever uploaded this is an absolute scholar and gentleman. Thank you so much for preserving (with incredible quality) this work of art from Microprose. For those interested, you can find copies on eBay for around $20-$35 (boxed, with all documentation), or a CD-ROM for about $5. For modern machines, FOTI runs great in DOSBox with CPU cycles set on par with an AT/286/386-class machine. You absolutely need the manual , this addendum, map, and keyboard command reference, which are also in this collection, and also scanned with incredible quality.