A known member of the Aryan Brotherhood Nation is being held as a felon in possession of a firearm and a repeat offender on charges of domestic violence and disorderly conduct. Michael Anderson made an appearance in Brown County Circuit Court Friday. He was arrested after hazardous chemicals were found in his house last week. Green Bay police officers say Anderson threatened to throw acid on them while they were in his house. They evacuated the basement when a dangerous chemical determined to be present in the air.