storm of things that can contribute to crashes. >> reporter: sometimes parents worry about exotic halloween hazards like tainted candy and forget about this, the most devastating danger of all. >> it's really important for parents to think about walking safety and visibility for their children on halloween. really is the top concern. >> reporter: other statistics to note to help keep your kids from becoming one, pedestrians death among 4 to 7-year-olds are decreasing. but deaths of 8 to 14 are on the rise. nearly 2/3 of the victims are boys. and the biggest danger lies in the middle of the block, not at an intersection. >> think about what you are doing and just be safe out there. >> the slightest moment could kill somebody. could take their life. >> reporter: a year later, haley and melissa are mostly recovered, although the pins in their legs cause them a lot of pain but they have turned that pain into passion. >> i think what i am most proud of is just how they turned a negative experience into -- an