Communication..communication...communication...
That means asking the right questions and truely listening...
You know that his anger is fear,,fear of what he doesn't understand,,what he can't control...
Make him understand that it is OK for him to be afraid,,we all are,,,that these are challenging issues and they can be overcome a little at a time,,one day at a time...
Fear is the enemy here,,,everything else are adjectives...
I applaud you for your outward care when dealing with such personal issues...
Your children have a great Mom.....and Dad...
Lenny