PHOENIX – Two people were arrested last week after the discovery of a cache of firearms and drugs on their Arizona properties, authorities said. Robert Stevenson, 66, and Brooke Smith, 53, were booked into Pima County Jail to face multiple charges, including two counts of possession of a narcotic drug for sale, one count of possession of drug paraphernalia, one count of weapons misconduct and one count of theft of a firearm, the Arizona Department of Public Safety said.