Police reinforcements are seen at the Cuatro Vientos airbase in Madrid Sunday Aug. 21, 2011 where Pope Benedict XVI will hold a mass. An estimated one million pilgrims slept overnight at the base and ... more 
Police reinforcements are seen at the Cuatro Vientos airbase in Madrid Sunday Aug. 21, 2011 where Pope Benedict XVI will hold a mass. An estimated one million pilgrims slept overnight at the base and police were stopping more pilgrims entering Sunday. The Pontiff is in the Spanish capital of Madrid for a four-day visit on the occasion of the Catholic Church's World Youth Day (AP Photo/Arturo Rodriguez) less 
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Associated Press | Photo By Arturo Rodriguez
Sun, Aug 21, 2011 3:31 AM EDT