Ronaldi Rollins’ view from his corner office on the third floor is typical of metro Atlanta. A parking lot, some two-story apartment building, all nestled in the middle of a bunch of pine trees. Welcome to Jonesboro, Ga., command central for one juvenile probation officer in charge of 20 struggling teens. To pay a visit to Rollins, a kid has to make it past two levels of security. First, the metal detector and officer at the front door.