Investigators have not revealed a motive in the ambush-style killing of Pentagon police officer George Gonzalez, 37. But Lanz’s past brushes with the law, and neighbors’ accounts of recent menacing behavior, appear to suggest the violence was more likely the act of a troubled, violence-prone individual than part of a broader conspiracy. This April 2021 image provided by the Cobb County Sheriff’s Office shows a booking photo of Austin Williams Lanz. On the right, an undated photo provided by the Pentagon Force Protection Agency shows Pentagon Police Officer George Gonzalez.