Thursday afternoon 2:28 Barton enters the offices of Momentum Securities. Minutes later, he fires two handguns. 2:56 A distressed manager calls 911 from Two Securities Center, reporting two people shot on the third floor. 2:58 A second 911 call from the same building reports four people dead. 3:00 Dozens of police officers flood the scene. Witnesses see a man carrying two guns entering Piedmont Center, across the street. 3:07 Police officer hears gunshots coming from Piedmont Center. 3:10 Five victims are found dead at All-Tech. Witnesses say that after Barton entered the offices, he exchanged pleasantries and then strode to the cubicle of the office manager. He was overheard saying, “I hope this doesn’t spoil your trading day,” before he began his shooting rampage. 5:00 Police lead workers from both buildings to safety.

Thursday evening 7:45 Police spot Barton’s minivan on I-75 in north Atlanta. 7:54 Barton pulls into a BP station in Acworth, followed by police cars. 8:17 Police confirm Barton’s suicide by self-inflicted gunshot to the head.