i think there are probably some good lessons you can teach your son thru these situations. can you summarize your feelings to him at th highest level ("Daddy got scared by something but is ok now") rather than feel as though he wont 'get it' unless he know the details? he probably would appreciate confirmation that what he senses is correct (hence giving him confidence that he can trust his senses) and watching you be able to talk about how you handle scary feelings might help him handle his on scary feelings in an open and articulate way. maybe?