I find it rather distasteful that the author chose to drag in an unsupported theory about Phong's tragic illness and death. The school cited was several miles from the closest of the three locations mentioned (Tan Son Nhut), and the military wasn't spraying Saigon.
Is it possible he was heavily exposed during the two years when that would have been possible? Many things are possible, of course. Is there any evidence whatsoever? I've been unable to find any citations to that effect. Certainly the author didn't bother.
It _is_ a bit damning that he died, though, of an ailment that is primarily the outcome of the _carcinogens the US was willingly dumping as an assault on the country_.
I mean, it’s not a smoking gun, but does that really matter?
Is it possible he was heavily exposed during the two years when that would have been possible? Many things are possible, of course. Is there any evidence whatsoever? I've been unable to find any citations to that effect. Certainly the author didn't bother.