Preventable injury is the No. 1 killer of kids. This #NationalInjuryPreventionDay, and all year long, we're on a mission to change this statistic by spreading the word about how to keep kids safe. Some of the most common preventable injuries are related to cars, water, firearms and sleep. Here are our top tips to keep kids safe in these areas, all from our team of childrensatl safety experts.