Frank O'Leary served as Treasurer of Arlington County for more than three decades and has seen it all. During his time in office, O'Leary brought the tax delinquency rate down from 9 percent to less than 1 percent, but somehow managed to win friends in the process. O'Leary, 74, is retired but still avidly follows and offers predictions about about Arlington elections. We talked to him about his time in office, whether names like Jefferson Davis Highway and Washington-Lee High School need to change, his predictions for the upcoming November elections, and why restaurants are among the hardest businesses from which to collect taxes, among other topics.