For the past four years, I have walked my kids to school every day.  When Tommy was born, I went to part-time and the flexibility allowed me to take my kids to school and pick them up most days.  Shawn walked them some mornings, especially as the kids got older and there were different preschool and elementary school drop offs that we needed to share.  In fact, the last morning he had with them before he entered the hospital, we walked the kids to school together.  We had to drive part of the way, but he soldiered on and we made sure to drop each of them with their respective…