Kick the Khan
No clear indications of who is firing shots or at whom. There's no signs of combat more serious than shoving and nasty words. Otherwise seems accurate. At enough altitude, you can get LOS on the warehouse itself, and yes, it seems to be the epicenter.
To be clear, this isn't packed tight like a rally--it's like multiple gangs setting camps around an epicenter or zooming around in their bikes. Get past a camp and you should be able to reach the warehouse. The warehouse itself is single-level with a single vehicle bay door and a single person-sized door around the corner. It seems pretty nondescript overall. Looks like it's been out of use for a few decades, but some minor repairs. There's an asphalt lot nearby for vehicles, now full of bikes and buggies. From Val's description, that's probably where she put her chopper down during the run.
No sign of 405s or Ancients, although there's enough chaos here, that isn't a guarantee they aren't actually present.
(I'm assuming Duck is heading there on foot, not shouting out of the van or something.)
Duck approaches the camp. He doesn't even reach the edge of the firelight before he's challenged, and a pair of leather-bound orks wander on over to check you out. The one shouts out, "frag off, breeder." A second, "frag yourself. It's that pale guy from the comic shop. He's cool."
The first ork backs off, but keeps his finger on the trigger. The second gets within chatting distance. "Listen chummer, this is Tusker business. You step into camp, I gotta shoot ya. I go into the warehouse, they shoot us both. Better to lay off, neh?"