'The Moment Is Now.' Teachers, Like Students, Are Finding Their Voices on Gun Control After Parkland

Deb Ciamacca has spent a lot of time thinking about how she would protect her students if there were a shooting at her high school. Before she was an AP government teacher, she was a U.S. Marine. As she hears about one school shooting after another, she can't help thinking about school safety like combat.

"I could say that when I was in the military: Would I take a bullet for the guys who worked for me? Yeah, I would.