So, this morning while driving to work, my Vietnam War obsession spilled over a bit into the world of Shadowrun.
I'm imagining a campaign where the player characters are Lone Star or Knight Errant grunts, or perhaps even UCAS Marines. For political reasons, there has been a call for the pacification of the Barrens around Seattle, which has high strategic and economic value for UCAS. Maybe there's a Communist insurgency or something in the Barrens or the various gangs and entities are becoming a more cohesive threat to general order and stability for some reason.
However, again for political reasons, maybe even austerity politics, this can't be accomplished using brute force on a war footing. It either gets outsourced to private police companies or maybe the UCAS Marines on the cheap with lots of diluted political rhetoric and objectives. So the player characters have to try and manage some kind of counter insurgency effort on the cheap in the Barrens, winning hearts and minds and that kind of thing.
There can be ambushes, insurgency, booby traps, villages, all this sort of thing.
They can call in gunship support and that kind of thing but in general not so much artillery strikes. To make everything Vietnamilicious for some reason there should be lots of helicopter based insertions and casevac. Maybe some patrol boat insertions or extractions for areas that are adjacent to water.
I am thinking for more of an Aliens-type-Vietnam-inspired look and feel this would work best with SR 2nd or 3rd edition which better reflects the Aliens tech level sensibility than does later editions.