Texas shooting: The teachers who sacrificed their lives to protect children

"We have a wonderful year ahead of us!"

This sweet and simple line, written by fourth-grade teacher Eva Mireles at the start of the school year, is haunting now.

On Thursday, the last day of school, she and fellow teacher Irma Garcia should be packing up their shared classroom at Robb Elementary in the small Texan town of Uvalde, and preparing for the summer break.

Instead, their families are making funeral arrangements, after they were gunned down in a mass shooting, which also killed 19 of their young students.