Vincent answers.
Below, a tour group gathers for the last elevator up. Among them: a man in a gray coat, carrying nothing but a worn leather messenger bag. His name is Kaspar. No last name. No emotion. Vincent answers
Kaspar bypasses the security barrier with a cloned badge. He enters a restricted electrical room. From his bag: a folded 3D-printed casing, a lithium battery pack, and a small vial labeled "A-X." Not explosive. Aerotropic — a nerve agent that turns into vapor at 38°C. Vincent answers. Below