A man and a woman killed in yesterday's siege at a cafe in Sydney are being hailed as heroes.
It's claimed 38-year-old mother of 2 Katrina Dawson was shot and killed trying to protect her pregnant friend from being injured.
While café manager Tori Johnson tried to wrestle the gun away from the suspect - but it went off, killing him.
15 people made it safely out of the Lindt cafe in Martin Place.
