Seven-year-old Serenity Brydon visits a makeshift memorial to the vicitims of the mass shooting in an Aurora, Colo., movie theater.  The military-style assault rifle that James Holmes used to massacre moviegoers Friday malfunctioned inside the theater — a stroke of luck amid the horror that may have saved numerous lives, officials revealed Sunday.  The AR-15 assault rifle police say Holmes was toting was capable of firing 50 to 60 rounds a minute.  The Batman-obsessed suspect could have stood in the front of the cinema and raked the rows of seated filmgoers had the gun not jammed.  Sources told the Daily News that the nearly 200 pounds of ammo were shipped to his apartment by FedEx and UPS.  Holmes apparently was forced to switch to his 12-gauge shotgun: many of the 58 people wounded in the attack were hit with buckshot, according to surgeons. Holmes also had two Glock pistols.  Coloradans mourned the 12 victims and sought comfort at Sunday services and at a prayer vigil at the Aurora municipal center, and President Obama flew to the grief-stricken town to comfort victims — all as Holmes remained in solitary confinement in the women’s wing of the Arapahoe Detention Center, awaiting his first court appearance Monday to answer multiple murder charges.  Cameras will be allowed in the courtroom.  New details emerged Sunday about Holmes’ appearance when he was brought to the jail, where he has since been kept on 23-hour-a-day lockdown.  Tasha Taylor, who said a relative of hers is in the jail two cells down from the accused killer, described him when he first came into the lockup restrained to a wheelchair.  “He was brought in wearing his body armor,” Taylor said. “Once they got his armor off, his body was painted red. They had to shower him right away.”  Cops were probing the suspect’s past — and his computers — trying to find a reason why the 24-year-old grad student would meticulously plan a mass murder at the midnight premiere of “The Dark Knight Rises.”  More evidence of Holmes’ fixation with Batman emerged. Sources told The News a Batman poster hung in his apartment and The Associated Press reported a Batman mask was also found there. Cops discovered the items after bomb techs defused and safely removed a complicated series of explosive booby traps.  Holmes, who offered no resistance to arresting officers early Friday, reportedly told them “I am the Joker” — Batman’s sadistic nemesis.  Another poster in the apartment — visible through his window until cops put up shields — advertised “Soldiers of Misfortune,” a DVD about professional paintball players.
President Obama was scheduled to comfort grieving families and traumatized victims of the Aurora movie massacre on Sunday as police continued scouring the apartment of suspect James Holmes for a motive for his rampage –  retrieving a Batman poster among the evidence.