https://www.salon.com/2016/02/16/burn_pits/
Here’s where the story gets even more infuriating. As a result of the privatization of many aspects of military operations, the burn pits were operated by Kellogg, Brown, and Root (KBR), a former subsidiary of Halliburton, the company where Dick Cheney was CEO before ascending to the White House. During the Bush administration, Halliburton made nearly $40 billion from lucrative government contracts (despite many corruption scandals), Dick Cheney and his corporate allies got incredibly rich, and the soldiers whose lives have likely been destroyed by this reckless operation… are pretty much screwed.
an additional point made in article was whether Beau Biden may have potentially been impacted. "it seems that there is a very clear link between his death and his service in Iraq working in the vicinity of these burn pits and breathing in these hazardous fumes."