Gabriels medical cost and travel

Gabriel was a Firefighter EMT in Iraq .During his time there he was exposed to toxic burn pits..he developed Non Hodgkins lymphoma and went through extensive chemo treatments..he has been in remission for years but has continued to have unresolved medical issues which became life threatening the day after Christmas.. he was in the Hospital for a week coughing up blood , with breathing issues . He was diagnosed at that time with severe heart and lung issues. A week later he had a stroke spent a week in ICU. A week later he was  back in ICU this time with a Pulmonary Embolism . He is now required to wear a defibrillator vest and has been seeing many specialist to diagnose the cause . So far there are little answer's as to the cause other than his immune system appears to be attacking his lungs causing bleeding and chronic bronchitis, pneumonias  and heart issues . However he tested negative for all known autoimmune disease. It is now recommended that he travel to Denver and Cleveland  to see specialist in the  Iraq burn pit illness ......please share as much as possible it would be greatly appreciated