Derek didn't know what the hell was going on. Call it sixth sense or spending plenty of time with people out of necessity, he could tell something was wrong, but he didn't know what and then he started to feel weird, calm in a way.
He was still trying to piece things together when Deeks showed up. "What's going on?" He shook his head, trying to clear this fog that was in his head. "I'm feeling strange. What is this? Powers, gases?" He could remember the different smells of the early year of the war, the first one with no masks or oxygen tanks, smells that meant people would die. "Should we ventilate?