My husband's first cancer diagnosis was in 2006. There have been several recurrences and a couple of new cancers since.
It never occurred to us that these health issues might be related to his deployment to Vietnam until I heard a plea for volunteers for our local veterans Stand Down and went to spend a weekend hearing what other veterans were going through. I learned a lot about agent orange and burn pits.
I also became an enthusiastic volunteer and was president of their board for three years.
If you have a Stand Down in your area, they are worth supporting. If you are a veteran, attending is something to consider. I have to say my husband was supportive but never attended himself. I quit the board after getting them on their feet financially. 
This weekend is our local Stand Down, and although I am not involved, I wish them much success.
This was me promoting the 2015 event, which was my last.

https://files.sfba.social/media_attachments/files/111/178/076/983/486/688/original/097245b6f442099f.jpg 

 @c92d4e92 I’m so sorry. My husband’s Vietnam-vet father died young from aggressive colon cancer. 

 😞