As many as 10 young individuals robbed a man during a brazen attack on a Chicago train last week. Authorities made a single arrest of a 16-year-old boy Monday and charged him with robbery and aggravated battery of a victim 60 or older in connection with the incident, police said, according to WFLD-TV. The victim, identified by the outlet as 63-year-old Michael Manning, said he had just finished working a 12-hour shift and was keeping to himself during the train ride home when the attackers converged on him. “This was surreal. I think I was just so shocked. I think I kind of went numb,” Manning…