A heart shaped balloon hovered above a memorial for victims outside the Century 16 movie theater in Aurora, Colo., last week. Joe Raedle/Getty Images hide caption

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An ambulance and police cars outside the Century 16 movie theater complex in Aurora, Colo, during the early hours of July 20, 2012. A gunman attacked an audience there — killing 12 people and wounding 58. Bob Pearson/EPA /Landov hide caption

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President Obama at the University of Colorado Hospital in Aurora, Colo., on Sunday, when he met with victims and family members of last week's shooting. Saul Loeb/AFP/Getty Images hide caption

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