Confused. The husband was a veteran and a home builder. The most important issue is that he was a mechanic, including a tractor mechanic. I don't want to get all Colombo on this but I find it very hard to believe that any man with his experience and knowledge could make a mistake like that. This usually happens to young people or people with no mechanical experience.
So, could this have been deliberate? Suicide?
Or was something else involved?
After reading the husband's resume' and age, I simply cannot believe this was an accident. And why would they both go into the garage together to check on the generator? Something is not right about this.