What a terrible tragedy!  Accidents like this hit families so hard... and losing both a father and son this way!  The poor family must be just beside themselves.  It seems too, if one looks at the circumstances, that they were close and enjoyed doing things together.  How very sad.  The rest of the family must be just shaken to the core.  Hopefully they are a tight knit group with support systems.  I hate to hear about anyone in accidents, but this sort of thing is just too sad.