In about 60% of the cases sentenced in Pima County, the offender will be placed on supervised probation for an average of three years. Protection of the community is always the primary consideration when determining a supervision program. To ensure long-term protection requires motivating the offender to change those factors that contributed to criminal behavior. Based on empirical research conducted by social scientists, certain dynamic factors are common to offenders and are targets for change.

Concern has been expressed that mesquite bosques are disappearing or diminishing in quality, and that the survival of the mesquite mouse is consequently threatened. This study, funded by a grant from the Arizona Heritage Fund to the Pima County Regional Flood Control District, investigated the current distribution of the mesquite mouse by reviewing historical records from museum specimens, examining existing potential habitat at historic locations of the species and elsewhere in the county, and conducting a live-trapping study at 19 sites representing a range of ecological communities with mesquite as a major component.