Here's our walkthrough for 'Reporting for Duty', which is the the first mission in the Project Overthrow storyline of GTA Online's San Andreas Mercenaries DLC. Your objective is to assault David Quartz Quarry, destroy supply trailers, and secure a Draugr vehicle.
In the first mission, you must go to David Quartz Quarry, destroy the supply trailers, steal the Draugr from one of the containers at the site, and bring it back to LSA Lockup.
When you get to the site, engage Avenger's auto-pilot by going to your interaction menu and enter its hold.
Once inside the hold, use one of the turrets and destroy all the marked supply trailers.
It is optional, but you can also take out some guards and the anti-air turrets for an easier time escaping once you get the Draugr.
