Some technician had jury-rigged an independent lighting system for the lab—cables snaked from a compact fuel cell unit to the lighting fixtures overhead. Carla considered powering up the lights, but instead picked up a flashlight that lay on the floor beside the power unit. Judging by the silence and stillness, there wasn’t anyone else in the lab. But just in case someone was working in a back room, she’d wait until she’d checked the place out before announcing her presence with a blaze of light.