This mission can be started from the Bounty Board in Lynchwood. Go pick it up and you'll be sent to destroy the Sheriff's train.
- XP: 5716
- Money: $382
- Gear: Grenade Mod or Grenade Mod
Make your way southwest to the demilition repository. When you get there, you'll need to find a switch which will send out a mine cart with a missile in it. After doing that, run across the tracks and find the next switch which will close the door and prevent the missile from leaving the area.
Once the cart has stopped, grab the missile and then head to the nearby train tracks. Drop the missile in the cart and then head over to the nearby facility. Climb up to the side of the building to find the trigger for the bomb. Wait for the small cart to cross under the bridge and the train. When it is in the middle, set it off to take both the train and the bridge with it. When they have been destroyed, head back to the bounty board to get your reward.