. >> catira stevenson went on her break to pick up gang business. >> the fact that we documented and observed her leaving through our surveillance systems suggested that supervisors weren't doing their job. >> nationally, a headline emerges practically every week about prison corruption. "america tonight" teamed to quantify but we found out it's not documented. this comes even as the u.s. incarceration rate has more than quad ruchquadrupled since the 1970s. >> what would you think if we tried quantify this? based on what played out in baltimore? >> i think you would find that the general problem of smuggling of contraband into jails and prisons is a nationwide problem. if we are about preventing crime on the streets we need to focus on what happens when the inmates are behind bars. >> since the baltimore corruption scandal, the jail has undergone a massive overhaul. many prison guards have been either retired, fired or quit. the jail has also invested millions in new technology. better cameras to track inmates and officers, plus a system that blocks outgoing cell phone calls. >> what