DUBLIN, IRELAND - MAY 18: Irish President Mary McAleese, Queen Elizabeth II, Prince Philip, Duke of Edinburgh and Christy Cooney (President of the GAA) arrive at Croke Park on May 18, 2011 in Dublin,... more 
DUBLIN, IRELAND - MAY 18: Irish President Mary McAleese, Queen Elizabeth II, Prince Philip, Duke of Edinburgh and Christy Cooney (President of the GAA) arrive at Croke Park on May 18, 2011 in Dublin, Ireland. The Duke and Queen's visit to Ireland is the first by a monarch since 1911. An unprecedented security operation is taking place with much of the centre of Dublin turning into a car free zone. Republican dissident groups have made it clear they are intent on disrupting proceedings. (Photo by Chris Jackson/Getty Images) less 
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Getty Images | Photo By Chris Jackson / Getty Images
Wed, May 18, 2011 11:49 AM EDT