Pope Benedict XVI holds mass at Nationals Stadium in Washington

A member of the clergy stands with an outstretched hand near the left field foul pole (as if he were reaching for a pop fly at the fence) as he waits for Pope Benedict XVI to celebrate mass at Nationals Park in Washington on April 17, 2008. Approximately 50,000 people are expected in attendance for the Pope's mass. (UPI Photo/Roger L. Wollenberg)