In Aurora, a Day for Memorials and an Obama Visit Ted S. Warren/Associated Press Relatives of the shooting victims at a prayer vigil in Aurora, Colo., where President Obama visited on Sunday. AURORA, Colo. - President Obama came to this city on Sunday to meet with survivors of the shooting rampage at a movie theater last week, visiting the victims and their families and leading the country in mourning the 12 people killed in the attack. "Even in the darkest of days, life continues and people are strong," Mr. Obama said. He described sharing hugs, tears and laughs as he heard stories about loved ones lost and acts of heroism. "I come to them not so much as president as I do as a father and as a husband," he said. Across the city, residents gathered at makeshift memorials to grieve as a community while condolences poured in from near and far, from Hollywood to the Vatican. As the families of victims struggled with their loss, new details emerged about the shooting suspect, James E. Holmes, and what happened when a gunman fired into a crowded theater during a midnight premiere of "The Dark Knight Rises" on Friday. The carnage could have been worse, but one of Mr. Holmes's weapons, a high-powered semiautomatic rifle, jammed during the shooting, a law enforcement official, who requested anonymity because he was not authorized to speak publicly on the issue, said Sunday. Police Chief Dan Oates of Aurora said that while they were making progress in the case, the investigation would take time. "We're focusing on how he got the materials that he got that were used in the shooting, that were used in the apartment," he said in an interview on CBS's "Face the Nation." We're focusing on anyone who knew him and statements he may have made. We're building a case to show that this was a deliberative process by a very intelligent man who wanted to do this. The police believe that Mr. Holmes began planning his rampage for months, when he began acquiring the materials that he would use in both the shooting and to rig his apartment. There were also clues as to how Mr. Holmes might have paid for the weapons and other materials he acquired. He was receiving a $26,000 stipend, in monthly installments of $2,166, for a National Institutes of Health neuroscience training grant for the graduate program he was enrolled in at the University of Colorado-Denver Anschutz Medical Campus, a spokeswoman said. Mr. Holmes withdrew from the program last month without explanation, the university said. Mr. Holmes was being held in solitary confinement at an Aurora jail, awaiting his arraignment Monday morning. Mr. Obama never mentioned Mr. Holmes by name during his remarks, instead referring to "the perpetrator of this evil act." "In the end, after he has felt the full force of our justice system, what will be remembered are the good people who were impacted by this tragedy," Mr. Obama said. The president focused his remarks on the "remarkable" stories he was told. "Most of the conversation was filled with memory," Mr. Obama said. It was an opportunity for families to describe how wonderful their brother or their son or daughter was, and the lives that they had touched and the dreams that they had held for the future. He told the story of one girl he met, Allie Young, 19, who was shot in the neck. She survived, Mr. Obama said, because her 21-year-old friend, Stephanie, laid by her side and stanched her bleeding even as shots continued to ring out. Allie told Stephanie she needed to run. Stephanie refused to go," the president said. Because of Stephanie's timely actions, I just had a conversation with Allie downstairs and she is going to be fine. The president spoke at the University of Colorado Medical Center, where 23 of the victims from the shooting were treated. By the time he arrived on Sunday, one was dead, 12 had been released, leaving 10 patients: 7 still in critical condition and 3 in good condition, a hospital spokesman said. John Eligon and Serge F. Kovaleski reported from Aurora, and Marc Santora from New York. Reporting was contributed by Dan Frosch, Jack Healy, Helene Cooper and Erica Goode.