A former <a href=”https://www.cnn.com/2020/06/22/politics/ethan-melzer-charged-us-soldier/index.html” target=”_blank”>US Army soldier</a> pleaded not guilty to charges that he was planning a mass casualty attack on his own unit by sending sensitive information to an extremist group.

Ethan Melzer, 22, of Louisville, Kentucky, was a private in the US Army who authorities say was planning