Battlefield 4 Mechanic Field Upgrade - Engineer Score 64,000.

LEVEL 1: FAST REPAIR:
Increases speed and sabotage of Repairs by 35%.

LEVEL 2: FLAK:
Decreases damage from explosions by 15%.

LEVEL 3: COVER:
Decreases amount of Incoming Suppression by 50%.

LEVEL 4: REPAIR UNIT:
Occupied vehicles will slowly Repair nearby Vehicles.