Thirty-six-year-old Brian Edward Cannon and 28-year-old Cory Robert Williamson appeared in federal court in Rome Friday for a detention hearing. Both were denied bond.
Terry Eugene Peace, who's 45, is due for his first court appearance Monday.
According to a sworn statement from an FBI agent, the men talked in online chat rooms about sabotaging infrastructure.
Authorities say the three were arrested Feb. 15 at a meeting they had set up to buy explosives from a man who turned out to be a confidential law enforcement source.
The three face charges of conspiring to receive and possess firearms, specifically pipe bombs and thermite grenades.
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