The United States Attorney's office said Larry Rendell Brock faces two charges for knowingly entering a restricted building without lawful authority and one count of violent entry and disorderly conduct on Capitol grounds.
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An affidavit sent to the D.C. District Court said Brock's ex-wife of 18 years claims to have noticed him when she saw pictures of what was happening at the Capitol.
"I just know that when I saw this was happening, I was afraid he would be there," she said in court documents. "I think you already know he was there. It is such a good picture of him, and I recognize his patch."
Another witness pointed Brock out after seeing his tattoos in pictures from Wednesday.
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"It looks like him and he has pilot wings on his chest in this picture," the witness said in the affidavit. "He was an A-lO pilot. Worked at L3, and he still has contacts that work with L3 that knew he was flying to Washington DC."
Law enforcement officials also said Brock was wearing a green helmet, green tactical vest with patches, black and camo jacket, and beige pants at the time of the siege. Reports also say he was holding a white flex cuff, which is used by law enforcement to restrain and/or detain subjects.