"I'm sure we can use fingerprints to corroborate, if need be," Gene said. Then: "Valdis, do you recognize this scent?"

He directed her to a few droplets of dried blood and a scrap of fabric caught on some of the destroyed metal. "There might be prints here, too." His own attention was caught by a phrase painted on the wall. "Do either of you recognize this? I think it looks like something from the Sabonile."

During his investigation - where Gene hasn't gotten to yet - Zohvin might notice that the automated railway signaling controls had been cut, while everything else seems to have been destroyed at random in an attempt to cover the saboteur's tracks.