Former Army Staff Sgt. William Thompson has had two double-lung transplants since returning from two tours in Iraq, which he attributes to exposure to a toxic brew of medical waste, human waste, plastics, tires, electronics, paint cans, routine garbage and clouds of muck that came off the big burn pit at Camp Victory and other U.S. bases in Iraq. For more on his testimony before Congress and the DoD response, see this Military.com article.