My 6yo has Aspergers and Anxiety. He's a hugely anxious kid. He's always had fears about certain things and "baddies" have been a recurring theme. For the last few months, his fear of "baddies" has been almost crippling. For some reason, a family member decided to tell him about the recent school shooting (I have NFI why

) and when he freaked out, told him that "only people in America have lots and lots of guns". He's now terrified of Americans, terrified that a "baddie" American will come to Australia and shoot him or that we will go to America one day (no plans for that!). It has also made his anxiety about getting lost etc and a "baddie" finding him a hundred times worse. He's no longer confident in the protective behaviours I have already taught him (listen to your body etc), so I need something more.
I've promised him we can do some "action plans" tomorrow. We do lots of social stories etc so it's a format he knows and I know he responds well to. What are the best websites for teaching protective behaviours etc for young kids? He responds well to computers, so looking it up on the computer will work well for him.
Any ideas?