"Shit. I thought..." he said to Johns by way of half-apology, stopping to cough and hack wretchedly as he breathed in a lungful of grit. Something was wet and hot on the back of his head and when he touched his hand to it, it came away soaked in fresh blood. Well, that would explain the blurring to his vision, he thought with a strange calm, and tried to clear his head, blinking hard and concentrating.