Soldat grins, relieved, after that long pause. "Good. Okay, good. First part, it's easy. Every day, you walk through the train. Same time every day, don't care when, you can pick a time to tell me. And you count everything I tell you to look for that day. Or smell for. Or touch. Then you tell me, after, what you found. I tell you what you missed, if anything. Teaches you to be alert."

That's the simplest part, a way to start. Their other ideas, for how to compensate for the loss of hearing in an actual battle, they'll start on when he's had some time to get settled into just observing.