In any discussion of rock acts that have improved with age, English heavy-metal institution Iron Maiden has to come in somewhere near the top. Even if Bruce Dickinson can't hit the same screeching high notes of his prime (cut him some slack, the guy overcame tongue cancer), he deploys his resources for maximum impact, something that could be said equally for his restless bandmates.
Iron Maiden plays at the Barclays Center on Saturday, November 2, and at the Prudential Center on Saturday, November 9.