CNN EarlyStart May 23, 2013 10:09:00
Underground shelters. the main reasons? the high cost of retrofitting the schools and porous soil. >> it's about the money and the statistics. f-5 tornado is very rare, 1% to % of the tornadoes. they don't happen very often. it's the very reason they don't have safe rooms for earthquakes, they don't work all the time. >> reporter: a painful truth for mickey dickson-davis who lost her son kyle at plaza towers. >> with us living in oklahoma, tornado shelters should be in every school. it should be -- you know, there should be a place that if this ever happened again during school, that kids can ...