He followed silently, not making a sound. He didn't dare get too close to the Void and was counting on Kevin to signal him when he was in the Void's range so he could stay out of it.

Luckily they wore distinctive uniforms, and he was watching. In his chest, his heart hammered in his chest. He was peeking through the walls - permeable to xrays luckily if not to IR - and he was taking a headcount. He was also memorizing the halls and doors, even counting steps.