
Gentry's death from lung cancer last week is being recorded as the US's first fatality from exposure to a cancer-causing toxin in Iraq, according to the Evansville, Indiana, Courier & Press.
In 2003, Gentry commanded a 600-strong force providing security for KBR's refittal of the Qarmat Ali water-pumping plant, which provided water needed for oil extraction. Gentry and others claim that during that time they were exposed to hexavalent chromium, a cancer-causing toxin that the Iraqis who had built the plant had used as anti-corrosive material.