Antoinette Tuff took to social media Saturday night to thank administrators and teachers at Decatur’s Ronald E. McNair Discovery Learning Academy, whom she called “heroes” during the 2013 school siege.

The incident was the subject of a Lifetime film, called "Faith Under Fire," starring Grammy-winning singer Toni Braxton as Huff, the school's courageous bookkeeper. The film aired Saturday night.

Tuff, using her faith in God, convinced gunman Michael Brandon Hill to surrender to authorities without a fatality in the school of 880 students and faculty .

Apparently, viewers thought the film was well done.

Dallas megachurch pastor T.D. Jakes was one of the executive producers.

Hill's lawyer later said the school incident was a bungled attempt at suicide. He received a sentence of 20 years in prison.

The film is based on the book "Prepared for a Purpose: An Inspiring True Story of Faith, Courage and Compassion in Crisis" by Tuff with Alex Tresniowski.

RELATED: Lifetime page about the movie Faith Under Fire

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