Daybreak's Lucy Watson speaks to Debra Accomondo - who knew one of the victims of the US shooting.
She told Daybreak: "It's one of those defining moments where you know your world is going to change."
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A woman hit by police gunfire during a counter-terrorism operation has been arrested after being released from hospital.
Police have been granted extra time to question a man who is being held on suspicion of planning a terror attack.
The man opened fire at the house, shattering the front door and window.