On February 15, 2010, 56-year-old Police Lieutenant Michael Vogt was killed while on duty in Chattahoochee Hills, Georgia. En route to another call, Vogt stopped at a suspicious vehicle on Vernon Grove Road and, after asking the driver for his license, was struck by gunfire from a high-powered weapon. Mortally wounded, he reversed his patrol car about 50 yards while radioing for help and was later pronounced dead at Grady Memorial Hospital.

The investigation focused on 44-year-old Robert M. Cook of Fairburn after a public tip that he owned a fully automatic assault rifle. A SWAT team arrested Cook on February 17, and the firearm seized from his home was later confirmed by the GBI Crime Lab to be the murder weapon; it had been modified for fully automatic fire. Cook had been drinking and was urinating at the roadside when Vogt encountered him and had previously been arrested by Vogt.

Cook was indicted on multiple counts including murder and possession of a machine gun. He pleaded guilty to avoid a potential death sentence and was sentenced to life without parole; his defense noted a bipolar disorder diagnosis and that he was taking six medications on the day of the shooting. Did anyone in the area have contact with Lt. Vogt or recall seeing that roadside encounter?