By Sharon Stevens Education Reporter (KSDK) — Grief counselors will return to Oakville Senior High School Tuesday, where students and staff are remembering three friends who died over a three-day period. Chad McCord, Ed Raterman and Corinne Foster were all killed in separate traffic mishaps that occurred last Thursday, Friday and early Saturday morning. Oakville students began the day with an extended moment of silence for the three teenagers. Counselors were on hand to help console the grieving. The tragedy was compounded by the fact that six students or recent grads have been killed in traffic accidents in less than...