Quest pickup locations

Not sure if I’ve picked them up and they have gone but I have the following quests still to do. but I do not know where to pick them up from.
Strength in Numbers

At Death’s Door

Secret Cargo

Spiking the Guns

Hazardous Contents

Tilting at Windmills

Prospect Tunnel

Zero Hour

Contraband

The Enemy of my Enemy

Behind the Curtain

I cannot complete the “Spiking the guns” mission so that might be blocking some progress but I should be able to clear some of these others while waiting for a patch.

Thanks for your help

Steve

Not sure if you found Zero Hour, I just did it’s at -3831, 269 inside blue building on a bench…