Miles, from his vantage across the pod, is well placed to observe that the nerve disruptor came from a trouser pocket, not the vest - therefore the intruder, whoever he is, is still armed with something. First things first - he tracks the nerve disruptor's trajectory as it bounces back and forth across the cabin, until he can match course and grab it out of the air without accidentally shooting himself or Ivan, a horrifying prospect to say the least.

His success is well timed, because Ivan has just pinned the old man, and Miles can bounce across the cabin himself to haul open that vest and retrieve the second weapon while he has the chance. A short rod, of unfamiliar design - at first glance he parses it as a shock-stick, but that isn't quite right.