it's just before 8:00, and pam bosley is already running behind. >> thank you for this day. we thank you god to look on tre as he goes to school. >> the chicago mother of three is rushing to get her 17-year-old son tre to school not just on time, but alive. it was nine years ago that pam's oldest son terrell was shot and killed right before band practice. terrell was outside of a church helping a friend unload his drums from a car when the shots rang out. he was 18 years old. the day terrell died, the nightmare began. >> i cannot afford to have this happen again. >> things got so bad for pam she tried taking her life not only once, but twice. >> me and terrell was so close. no mother should have to bury their child. >> then pam had a realization. she wanted to live. she wanted to make a difference. she left a 20-year career in banking to start purpose over pain, a support group for parents who lost their children to gun violence. pam now works at st. sabinas catholic church, a fixture to chicago's south side in the heart of the city locks call shyrak. before each workday, sh