Site of the GMAC massacre

James Edward "Pop" Pough (February 16, 1948 – June 18, 1990) was an American spree killer, who, on June 18, 1990, killed nine people and wounded four others in a General Motors Acceptance Corporation car loan office in Jacksonville, Florida, before committing suicide. The day before he had already killed a prostitute and her pimp, wounded two teenagers and robbed a convenience store.

The shooting at the GMAC office was the worst single day massacre by a lone gunman in Florida history, surpassing the murder of eight machine shop employees in Hialeah by Carl Robert Brown on August 20, 1982.