A World War Two veteran and math teacher at Santa Rosa Junior College has died at 93-years-old. Bill Mitchell taught math for 52 years at several middle and high schools. He finally retired at 90 after his wife died. Mitchell was shot just above the heart in the battle of Iwo Jima in 1945 and was honorably discharged from the Marines at 19-years-old. Mitchell also beat cancer twice, and pulled through after bypass surgery. He’s survived by his three children, several grandchildren and great grandchildren.