“If you’re not scared by it, it doesn’t seem like it’s an aspiration that you should go after.” On November 18, the docuseries “Kennedy” premiers on the History Channel. It is the third documentary from 23-year-old Carmel, Indiana filmmaker Ashton Gleckman.  That’s right, he’s just 23. In this episode, he opens up about his passion for filmmaking, overcoming fears, and his next big project.