Like friendly fire, "family fire" is a preventable tragedy. In homes across this country, eight children and teens a day are being shot or killed unintentionally. That adds up to nearly 3,000 lives changed or lost every single year.

Aalayah Eastmond loved spending time playing violin, dancing, singing and listening to Kendrick Lamar and Chance the Rapper — before a catastrophic event transformed her life. As a survivor of the Parkland shooting, where a gunman killed 17 people, Eastmond brought tears to many eyes when she first spoke out on Megyn Kelly Today, just two weeks after the tragedy, recounting how she survived.

“We will do everything in our power to make sure that untraceable, downloadable guns remain nothing more than an idea. To those who want to see this dangerous concept become reality, all we have to say is this: Not on our watch,” said Avery Gardiner, co-president of the Brady Campaign.

Firearms and components for rifles can now be made at home by anyone with a 3D printer. Ali Velshi and Stephanie Ruhle break down what these 3D-printed guns are and asks the co-president of gun control advocacy group The Brady Campaign, Avery Gardiner, what comes next.