In these undated photos provided by the Philadelphia Police Department, Khusen Akhmedov, 23, left, of Lancaster, and Ahmen Holloman, 30, of Philadelphia, are shown. Akhmedov and Holloman, who were arrested Wednesday, July 17, 2013, are facing third-degree murder, involuntary manslaughter and other charges in a Tuesday crash that killed a mother and three young sons crossing a 12-lane highway plagued by pedestrian deaths, police said. A fourth son was injured. (AP Photo/Philadelphia Police Department)