This "church" isn't protesting the war. They are an anti-gay church and maintain that God is punishing us because of our lax morals. So they've been to a number of military funerals and even protested the funeral of Elizabeth Edwards. Wikipedia has a good page on this "church". In reference to the security (or no security), the local Sheriff said it isn't typical to provide security unless asked and that they weren't even aware of the event. I know my US Representative has a number of events like this one and I've never seen security.