Until you know who these people were(the adults) and what they did for a living then it is way to early to relate this to anything Q. I suspect this is just a very sad accident.
Is this the same Tom Hastings? I have no proof that it is. This Tom Hastings in the article I will link in this comment apparently is a journalist for a paper out of Paris, TN
http://www.parispi.net/opinion/columns/article_85d169b2-0052-11e8-b502-0f264c82c5a7.html