Law enforcement agencies have identified "a broad set of potential soft targets for an attack," particularly designated viewing areas at the 128th Boston Marathon, according to a threat assessment obtained by ABC News.The assessment for the 2024 Boston Marathon says there is no specific credible threat for violence. "DHS and FBI assess that the most significant terrorism threat facing the 2024 Boston Marathon stems from lone offenders and small groups of individuals seeking to commit acts of violence," the document, obtained by ABC News, said. The document noted that the 2013 marathon bombing continues to provide inspiration, citing recent al-Qaeda propaganda which has included images of the 2013 bombing and the Tsarnaev brothers to encourage violence, particularly in retaliation for the ongoing Israel-Hamas war.The assessment from the FBI, Department of Homeland Security and Boston police identified no specific, actionable threat but noted the proximity to springtime religious observances and symbolic anniversaries including the Oklahoma City Bombing, the Branch Davidians compound fire in Waco, Texas, Adolf Hitler’s birthday and the 25th anniversary of the Columbine High School massacre in Littleton, Colorado. The marathon will be run amid a heightened threat environment caused by the ongoing war in the Mideast and the highly charged political atmosphere at home. Former Boston Police Commissioner William Evans has taken part in 61 marathons, including many in Boston.Evans, now chief of police at Boston College, is well aware of the massive security effort that rolls out for the event, standard following the marathon bombing 11 years ago. "We need a clear course to make sure the runners are secure and, you know, any threats that might be out there, we watch closely," Evans said. "Unfortunately, it's a crazy world now," Evans said. "We've seen what happened in Russia. We see every day how many guns are out there, so we can't let our guard down and we can never let down our guard. "