Reposted from my public comments:
An extensively detailed scenario with great Referee resources for tracking resources and movement (e.g., travel timeline, hex maps), tables for generating random encounters, and options to extend the scenario further depending on player choice during the game. I really loved the named NPC section with quotes from each person on major players and/or topics likely to come up during the mission (e.g., jungle, UN, US, USSR, local legends).
The scenario itself is well researched and includes nuance (something I particularly enjoy in my games) with no “right option” for the players to choose; some of the NPCs make bad choices but they’re not inherently bad people.
It’s not the kind of scenario you could run through a second time with the same group of characters, but there are many ways the scenario could be replayed by different characters to generate very different outcomes.