Hammond is a Delta Force operative. In 02AZ, he assists a doctor Marilyn Merch in injecting three prisoners at the Portsmouth Naval Correction Facility with a vaccine. Alvin Murphy is the only survivor and has proved immune to zombie bites, Hammond decides to bring him to California where the vaccine can be extracted. Together with eight other soldiers they get the calling code Delta X-ray Delta, and travel towards California.

Hammond's primary weapons seems to be an HK416 SMG with RIS foregrip and Beretta M9 pistol

Mark leading Murphy says to you upon stumbling on you I’m enlisting you to help me get this man to California to make a cure