Recently uncovered documents show that the United States conducted top-secret tests of Agent Orange in Okinawa in 1962, according to a veterans services employee.

The experiments, believed to have taken place under the auspices of Project AGILE — a classified program to research unconventional warfare techniques — have also been confirmed by a former high-ranking American official.

The documents, which include a ship's logbook, army deployment orders and declassified government records, were tracked down by Michelle Gatz, a veterans service officer in Yellow Medicine County, Minnesota.