Along with his partner, Sgt Worthington was responding to a call that a woman and her toddler were being held hostage inside their house.
A man under the influence of amphetamines had broken in and was holding the woman at knifepoint, and the man was not listening to police instructions.
"He had crazy eyes," Sgt Worthington said.
Get in front of tomorrow's news for FREE
Journalism for the curious Australian across politics, business, culture and opinion.
READ NOW�I was aiming my weapon at him, telling him to put the knife down but he wasn't responding to any verbal commands.
"He thought his daughter was in the house and was insane with rage."
The innocent family were targetted randomly by the man who had been at a party and, according to Sgt Worthington, was agitated and irrational after a long drug binge.
Following a tense standoff, the man threw the knife between himself and the police officers, giving the victim a chance to break free and the man was eventually subdued, arrested and charged with a string of offences.
Sgt Worthington called it his worse personal experience with a drug user.