Damien was searching through a bag on the ground. This was at least 6 months after the zombie apocalypse had started and Damien had lost an arm to it after his arm got infected and he needed to amputate it. He heard a noise behind him and turned around taking the gun out of his pocket, looking around to see if there was a zombie or another potential attacker. He's been travelling on his own for a while now and it's made him very cautious, especially with only one arm to defend himself with.