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.

Letter from A. F. Potter to Carl Hayden regarding W. W. Bass's livery permit. Bass's fee to maintain the roads has been reduced to $50 per year, but he will still need to keep his business at least a hundred feet from the Grand Canyon rim so as not to disturb visitors.