Although it's far from the only mass shooting the United States has faced in recent years, the incident that saw the deaths of 17 people at Marjory Stoneman Douglas High School in Parkland, Florida served as a tipping point for activism against normalized gun violence in the nation.
The clearest example of this sea change can be seen in the continued work of survivors of the shooting, who have co-founded an organization called Never Again MSD and push for legislative changes that would limit the circulation of guns with the most destructive potential.
But while that may be the most well-publicized response to the tragedy, one Mississippi-based charity is working to get a potentially lifesaving device in as many schools as possible.