He was last seen wearing black slacks, a long-sleeve black shirt, black shoes and possibly a fedora-style black hat. His hair was shoulder-length when he disappeared.
Arvidson was last seen on August 27, 2011 at his home in Brattleboro, Vermont. He left the house sometime afterwards, leaving a note saying he was going out and would be back later. He was supposed to meet his girlfriend at 4:00 p.m. that day, but never arrived.
Brattleboro Police Department: 1-802-257-7950
National Center for Missing & Exploited Children: 1-800-843-5678