Back No.6 in The Derby, back all at 6-1 and 66-1, any 16 h.h. horses, and you should cover the bases pretty well.
Agent Orange was used extensively along the Mekong River and its delta, to defoliate trees and shrubs, and thus kill off snipers' hiding places along the river's banks. One of the US brass authorizing its use was Admiral Zumwalt, whose young son served on one of the river patrol boats. His son, married with kids, got cancer pretty quickly after he returned to the USA, and died. Zumwalt blamed Agent Orange, though mostly himself. There are currently significant hot spots of cancer sufferers in Viet Nam today, and babies were born after the war with unusual birth defects. Many went on to develop childhood cancers, unknown in Viet Nam prior to its extensive and prolonged attack by chemicals.
Many visiting GIs who served in the war go back to help fund oncology treatment for these people. Most said that although they'd heard that some GIs had been stricken by various cancers, particularly lung and throat cancers, this was rebutted by the US Dept. of Health, the military, and GIs' widows were not given their husbands' war pensions, since the military said that it wasn't proven that exposure to Agent Orange had caused the cancers.
When the tourist GIs went on sentimental journeys to see their old battlegrounds, they were shocked to see wards full of both older and very young Vietnamese suffering with various cancers. Being able to put the 2 and 2 together that their own country refused to do, a lot of pressure groups started up to lobby for acknowledgment that Orange was a carcinogen, and very slowly and reluctantly that has now been agreed. The GIs felt that they'd been used badly by their masters, who'd knowingly and recklessly exposed them for prolonged periods to harmful chemicals.