NERO Soldiers are one of the last remnants of the pre-outbreak United States Government. In the initial stages of the outbreak, NERO troops attempted to stem the spread of the infection by manning checkpoints, refugee camps, and safe zones. As the situation worsened, they, along with their parent organization, were forced to pull out of the area. Two years after the initial outbreak, they still provide security for NERO Researchers as they conduct their research. Their heavily armored suits protect them from all weapons fire, and they cannot be killed in-game.