Timothy Hale-Cusanelli, 30, was employed as a security contractor at a Navy base when he was alleged to have breached the Capitol on Jan. 6, authorities said.
The threat appears to be connected to a far-right conspiracy theory, mainly promoted by supporters of QAnon, that Trump will rise again to power on March 4.
Army veteran Jessica Watkins is one of nine members and associates of the far-right militia group charged with planning and coordinating with one another in the Jan. 6 siege.
Retired Lt. Col. Larry Rendall Brock Jr. was arrested after being photographed on the Senate floor during the deadly riot wearing a helmet and heavy vest, and carrying plastic zip-tie handcuffs.
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