"Expired? No, that is wrong. Look at the throat and arm, defensive wound and killing blow." Roche looked up at Makaber, "Your right, the lines to the counter measures are disabled. That would indicate unprotected exposure to the virus. Do you see any indication of their route, Makaber?"
Some minutes of searching turned up little but a few threads clinging to the bolt of a shut off valve. "They seem to have taken to the water heading up stream, you will want waders if we follow"