Introducing Buck!
Before the apocalypse, Buck was an EMT. But now that all the hosptials were hell holes, Buck is as of almost no use to the people. Buck had been lucky, he was off work when the outbreak first happened and when he'd heard that shit had hit the fan he stayed away from that place. He'd watched enough zombie movies to know to hide until the screams stopped. When he emerged from his hiding spot, he found the apartment complex to be empty give or take about three zombies.
He knew what to do so that's why he survived this long... he had food, water, medical supplies, and protection. He's had several chances to save some survivors but his fight or flight instincts always kicked in, that's why he dedicated the rest of his life, no matter how short that may be, to a traveling medical caravan.
It's my duty, as an EMT, to save as many people as I can...
Buck quickly scaled a fence that was in his way, M1 Grand slung over his shoulder. He had heard that screech, the one that meant there were lots of them coming, maybe he wasn't too late. He bolted left, in an alley, and stopped when he heard gunshots... lots of them then began running again.
He rounded a corner and caught a glimpse of eight zombie sprinting into an open door, and the bullets stopped flying.
Not good, not good, not good!
He made sure his USP .45 was loaded and his First Aid Fit was secure then bolted into the open doorway. He immediately took out two with his pistol, and two more climbing up a fire escape. One ran from his left, he aimed for the head and pulled the trigger. Then one of the most terrifying thing to ever happen anyone during a fight to the death, his gun jammed.