DALLAS, TX – JULY 10: Police run towards a building near the Dallas police department’s headquarters after a man was spotted standing on the ledge of the building on July 10, 2016 in Dallas, Texas. While the incident turned out to be harmless, many people in Dallas are still on edge after the death of five police officers last Thursday night by a lone shooter. Investigators are saying the suspect is 25-year-old Micah Xavier Johnson of Mesquite, Texas. This is the deadliest incident for U.S. law enforcement since September 11. (Photo by Spencer Platt/Getty Images)