Support WBURThe Case Of A Confidential Informant Gone WrongPlay12:59Download AudioCarrie KahnFebruary 11, 2010 ShareThe faces of Guillermo Eduardo Ramirez Peyro through the ages, from various drivers licenses, a passport and a video of him in jail. To the U.S. government, he was officially informant No. 913, though most called him by the nickname Lalo.