I spent 20 years in the Air Force, 1981 to 2001. My first 6 years was spent in aircraft maintenance and we used trichloroethylene as a degreaser to clean parts.
Although it is clearly a carcinogen, I think I'd be hard pressed to prove that trichloroethylene caused my PCa twenty-five years after my last exposure to it. But I suppose it could have.
Susan - How was your husband's PCa proven to be service-connected?