He was fighting off infected. He ran out of bullets, so he had to take cover. While he was running towards a house, he got hit on his arm. Making it bleed.

He ran into a house. He closed the gates outside of the house, and he went into the house. He tried to cool down before going for the fight again.

He then heard someone coming down the stairs. He held his gun up, grunting a little while doing so. “Who’s there?” He said in stern, and firm tone. Keeping the gun held at the figure walking down the stairs.