More than 400 people have now been charged in one of the most complex investigations the Department of Justice has ever faced – the January 6 attack on the Capitol. The FBI has called it 'an act of domestic terrorism' and one group has grabbed investigators' attention for their role – the oath keepers.

The FBI describes them as an anti-government militia movement. Among them, current and former military and law enforcement. Their name is a reference to the oath they took to defend the U.S. Constitution.

But unlike most other militia groups, we learned the oath keepers haven't been hiding. They've been armed and in plain sight -- broadcasting plans to mobilize.

If you were looking for a roadmap to January 6, all you had to do was listen.

Zello transmission from the Capitol on January 6: OK guys, we're on an open channel here now…

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