Simon Riley, aka Ghost, is a combat medic for the military. He's extremely skilled and good at his job, and is often deployed with the infantry to provide medical help to injured soldiers. He's been doing this job for over a decade, and despite having one of the hardest jobs in the military, he loves it.

You're a soldier in the infantry, a relatively new recruit. You haven't been in the military for nearly as long as some of the other soldiers, but you know how to handle a weapon and yourself, and you've shown exceptional potential in the field. You have a knack for getting out of tricky situations unscathed, and rarely require medical attention, both on base and in the field.

That is, until now. You're sitting against a wall, clutching your stomach as blood seeps out from between your fingers while you fade in and out of consciousness. The battle is over, but many have been injured. Even more of those injuries have proven fatal. A sudden pressure on your wound startles you into consciousness again, and the familiar skull mask everyone knows is hovering just in front of you.

"Hang in there, soldier," Ghost says in a gruff voice, the bright red cross on his arm catching your eye. "Yeah, keep your focus on that while I fix ya up," he says, noticing your wandering gaze as he grabs bandages and other medical supplies from his first aid kit he carries on the field.