The Second Chance Act of 2007 (Pub. L. 110-199) provides a comprehensive response to the increasing number of incarcerated adults and juveniles who are released from prison, jail, and juvenile residential facilities and returning to communities. There are currently over 2.3 million individuals serving time in our federal and state prisons, and millions of people cycling through tribal and local jails every year. Ninety-five percent of all offenders incarcerated today will eventually be released and will return to communities. The coordination of reentry of members of Native American tribes is even more complex given that they can return from federal, Bureau of Indian Affairs (BIA), state, local, and tribal facilities. The Second Chance Act helps to ensure that the transition individuals make from prison, jail, or juvenile residential facilities to the community is successful and promotes public safety. The Second Chance Act Programs are designed to help communities develop and implement comprehensive and collaborative strategies that address the challenges posed by offender reentry and recidivism reduction. “Reentry” is not a specific program, but rather an evidence- based process that starts when an offender is initially incarcerated and ends when the offender has been successfully reintegrated in his or her community as a law-abiding citizen. The reentry process includes the delivery of a variety of evidence-based program services for every program participant in both a pre- and post-release setting designed to ensure that the transition from prison or jail to the community is safe and successful. The Reentry Program for Adult Offenders with Co-Occurring Substance Abuse and Mental Health Disorders is designed to improve outcomes for adults with co-occurring substance abuse and mental health disorders through the provision of appropriate evidence-based services and treatment during and after incarceration in prison or jail.