An 88-year-old Kansas man who worked as a school crossing guard died while saving two kids from a speeding car. Bob Nill, known to students at Christ the King Parish School as "Mr. Bob", was hit by the vehicle after pushing two children out of the way. He was rushed to a hospital and later died from his injuries. A former Coast Guard veteran, "Mr. Bob" had worked as a crossing guard for five years. The school hailed him as "a hero" while those who knew him say he was "very dedicated" to keeping the children safe. Do you still remember your elementary school's crossing guard? How should the school honor his memory?