lieutenant gailey whitney supervises star-4, a home of the excel program, a therapeutic community for substance abusers. >> i'm in here for zero to five. possession with intent to distribute. >> possession of a controlled substance with intent to distribute. >> two counts of distribution methamphetamine and illegal sale of a gun. >> while only 50% of usp female inmates are here specifically on drug charges, a large majority of these offenders are doing time for crimes committed in order to support a drug habit. >> it numbs you up and you don't feel. you become somebody you would never expect to be. >> cheryl megarry is serving up to five years for forging a credit card application, a crime she perpetrated in order to buy drugs. >> this unit's very good because the women all support each other. it's like a sisterhood. >> in the community they have mentors, they have support for each other. >> positive nine plus negative six. >> exactly. >> we have set it up so that everybody gets positive reinforcements all the time. >> we realize the consequences what we've done, because of the wrong