>> translator: my office is on the 12th floor of the ministry of defense. >> reporter: he worked at the ministry for years. his official i.d. describes him as a financial inspector. not part of the regime's inner circle, but in a position to see the wheels of repression at work. >> translator: during protests in damascus, armed gangs filled the green public transport buses and dispatched from our offices flanked by four-wheel drive vehicles, filled with weapons. >> reporter: and those they didn't kill, they brought back. >> translator: on a daily basis, i used to see they will bringing in blindfolded and handcuffed detainees on buses. they were kept in underground prisons. some even built under streets. >> reporter: he makes this chilling allegation. >> translator: what's more or ifg is the intelligence vans carrying the red insignificant 93 a labeled red crescent drive through the protests as