A teacher who survived the Florida high school shooting began crying during an interview while pleading with Congress to take action on gun violence.

During anĀ appearance on MSNBC, Melissa Falkowski said she doesn't think the school could have been more prepared, noting teachers had talked to their students about what to do in this situation.

"They knew what to do, we knew what to do. And even still, even with that, we still have 17 casualties, 17 people that aren't going to return to their families and to me that is totally unacceptable," she said.

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"It's time for Congress, government, somebody to do something and it's time to talk about what the problem is and try to fix it."

At least 17 people were killed and more wounded Wednesday when a shooter opened fire at a high school in Florida.

In the hours after the shooting, multiple lawmakers have called for Congress to take action on gun violence to prevent another tragedy.

President TrumpDonald TrumpKushner lands book deal, slated for release in 2022 Biden moves to undo Trump trade legacy with EU deal Progressives rave over Harrison's start at DNC MORE on Wednesday offered his condolences. He is expected to speak Thursday morning following the shooting.