The play is the thing
Umbra continues to scan the area. The Numenera and the light it emits from people look different. The presence of the Numenera is more intense, or maybe Umbra just isn't focusing right.
"Ugh, what that hell happened to me down there?"
Umbra cant shake the difference he feels in the Numenera fields. "To hell with this," he stops scanning, "I'll just go look the old fashioned way."
Umbra walks out of the room and slams the door shut. Maybe being alone will help him focus. He heads out of the building. "hmmm, this is new," he says out loud. Umbra has never had to look for someone without the help of his scanning ability. But the task must be done. Umbra walks away from the building.