I know exactly who you are talking about. When my friend Jon was KIA in Iraq, there was talk about the possibility of this scum showing up at his funeral, then concern again at the military funeral for my father after he passed away earlier this year. They didn't show up for either fortunately.
There is a non-profit organization called the Patriot Guard Riders. They are a national group of veterans who are motorcycle enthusiasts, and upon request, they will help any family who is facing the possibility of the WBC scum showing up at their loved ones military funeral. They block the "protesters" in a non-violent and legal way so the families neither see or hear them. I know quite of few of the Maine Patriot Guard folks, and they are a really great group of people.
You may want to contact the family and let them know about this organization. They are in all 50 states. I'll send you a private message with their contact info/link. Just check your inbox.
No family should EVER have to deal with these reprehensible so-called "protesters" at their loved ones funeral.