Using security footage, cellphone video, 911 calls and police reports, The Times has reconstructed the 12 minutes before Ahmaud Arbery was shot dead in Georgia on Feb. 23. Arbery had been pursued and confronted by two white residents, Travis McMichael and his father Gregory, who were armed and driving a pickup truck. The event was recorded on video by a third Satilla Shores resident, William "Roddie" Bryan, who was following Arbery in a second vehicle.