From Dallas Police headquarters where chief david brown is holding a briefing at this hour. The live desk is watching the News Conference and well be updated throughout the newscast. Meanwhile, chief brown said yesterday that micah johnson, who man who killed five Dallas Police officers, had larger attack plans. The investigation into johnsons attack is still ongoing and much remains unknown, including how johnson got his weapons. Right now federal agents are trying to trace the origin of a militarystyle semiautomatic rifle. And as that investigation continues, for the first time today, many key streets and buildings in Downtown Dallas will reopen. Hundreds of people will gather in dallas tomorrow for an Interfaith Memorial Service. President obama and former president george w. Bush will speak at the service. Edward lawrence has the latest. Reporter good morning, barbara. The president was briefed this morning about the latest on the investigation in the dallas attack that killed five