Provenzano was a 34-year-old unemployed electrician when, on January 10, 1984, he entered the Orange County courthouse in Orlando carrying a shotgun, an assault rifle, and a revolver, along with a large quantity of ammunition.

In addition, 53-year-old Deputy Sheriff Harry Dalton was wounded and suffered brain damage, becoming partially paralyzed and eventually dying from his injuries in 1991.

[1] 19-year-old Correctional Officer Mark Parker was hit in the spine and paralyzed from the neck down after being caught in the crossfire as he used his own body to shield a civilian from the gunfire.

[4] In 1999, the state of Florida heard a petition from Provenzano that argued that the electric chair was a cruel and unusual punishment.

Provenzano's eventual execution was carried out using a lethal injection protocol subsequently adopted by the Florida state legislature.