“He was kind of walking back and forth,” Child told CNN on Tuesday. “Once he saw us, he just stood up and kind of acted kind of nervous … shuffling back and forth.” Farinacci, who told a sheriff’s deputy he did not start the Old Trails Fire, was arrested Monday and charged with first-degree arson. Farinacci told a deputy he uses the matches to light his cigarette in case his lighter goes out. But “at least I can give them some kind of comfort” knowing his efforts helped investigators find the suspect.