The end of civilization came quickly, creating a post apocalyptic world where death floats on the winds. Deadly radiation and toxic bio-weapons threatens to make most of the surface unlivable.
This soldier carries a radiation sensor, attempting to map out the boundaries of the rad zones. He wears a sealed CBRW (Chemical Biological Radiation Warfare) environmental suit to protect himself as he scours the ruins.
This fellow has managed to acquire a double-barreled shotgun for protection against predators (human and otherwise) that prowl the devastation.