Columbine Father, Student Discuss Va. Tech  April 20 will mark
the eighth anniversary of the Columbine shooting.  Virginia Tech
shooter Cho Seung-Hui called the Columbine gunmen, Eric Harris
and Dylan Klebold, martyrs.  The Columbine shootings in
Littleton, Colo., shocked the nation and traumatized those who
went through that horrible day when Harris and Klebold killed 12
students and a teacher and wounded 24 others.  But Tom Mauser,
who lost his son, Daniel, in the rampage, said he doesn't expect
these kind of horrific incidents to stop anytime soon.  "I think
that there's a real serious problem in this country with
disaffected youth, disturbed students," he told The Early Show
co-anchor Russ Mitchell. "I don't think we're doing enough to
address it. Unfortunately, I did think it was probably going to
happen again."  Brooks Brown, a former Columbine High School
student, knew Harris and Klebold and tried to warn authorities
that they might carry out a violent act. He sees eerie
similarities between Cho and Ha