I-Team: What were men arrested for 'unregistered explosives' planning to do?

The men established a "special projects team" and advocated that the team construct, use and stockpile explosives they called "crater makers," their indictment reveals. The indictment provides details — dates, locations and topics — from nine conversations between King and Goodman. Their discussions appear to have been recorded using devices inside King's house and a building on Goodman's farm. While federal prosecutors don't disclose how the recordings were made, they provided screenshots of video recorded on the properties owned by Goodman and King.