Brad Miller was fired from the police force in Arlington, Texas, on Tuesday, after the department's chief said he was troubled with how Miller acted in the fatal shooting of an unarmed black man Friday. Reuters /Landov hide caption

itoggle caption Reuters /Landov

Police block the intersection of Dowdy Ferry Rd. and Interstate 45 during a standoff with a gunman barricaded inside a van in Hutchins, Texas. Brandon Wade/AP hide caption

itoggle caption Brandon Wade/AP

The entrance to the emergency room at Texas Health Presbyterian Hospital Dallas, where Thomas Eric Duncan was treated before he died from Ebola a week ago. Two health care workers who treated Duncan have tested positive for the disease. LM Otero/AP hide caption

itoggle caption LM Otero/AP

Trinity Groves, a sprawling food incubator in West Dallas, has attracted diverse chefs and huge crowds. Rebecca Combs/Courtesy of Trinity Groves hide caption

itoggle caption Rebecca Combs/Courtesy of Trinity Groves