Kyron Horman: 1 Year Later

Today, June 4, 2011, is the heartbreaking one year anniversary of the heartbreaking disappearance of Kyron Horman, who was last seen with his step mother, Terri Horman, at a school science fair.This is a terribly frustrating case for investigators and for the public. Why?What makes this case worse than others? Certainly there are other missing child cases?What makes the disappearance of Kyron