The prayer vigil at Holy Family Church in Duxbury drew hundreds of neighbors and first responders, remembering the two young children killed and their eight month old brother critically hurt. 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/