In a pre-recorded video, 11-year-old Miah Cerrillo, a fourth-grade student at Robb Elementary School in Uvalde, described what it was like to survive the mass shooting.

It marked a rare moment for Congress to hear testimony from someone as young as Cerrillo on a subject as sensitive and disturbing as gun violence.

In the taped recording, Cerrillo said she wants "to have security" and is afraid of experiencing another school shooting.

She described trying to hide behind her teacher's desk and said the gunman "told my teacher 'goodnight,' and shot her in the head."

Cerrillo said she thought the gunman would come back to the room and described covering herself in blood in an attempt to survive. "I put it all over me," she said.

Miguel Cerrillo, Miah's father, grew emotional as he said the shooting had changed his daughter. "Today I come because I could have lost my baby girl," he said. "She is not the same little girl that I used to play with, and run around with and do everything, because she was daddy's little girl." 

"I wish something would change, not only for our kids, but for every single kid in the world, because schools are not safe anymore," he said. "Something needs to really change."