Nathan Carman, the New England man now facing federal charges in the 2016 death of his mother off the coast of Massachusetts, shouts "Not Guilty" as he is led into federal court in Vermont. Subscribe to WCVB on YouTube now for more: http://bit.ly/1e8lAMZ Get more Boston news: http://www.wcvb.com Like us: https://www.facebook.com/wcvb5 Follow us: https://twitter.com/WCVB Instagram: https://www.instagram.com/wcvb5/