Ben said, "Dad, Dad, Bill's been shot. It's not good," Kelvin Crews said during sentencing submissions for Philip Nguyen, who has pleaded guilty to manslaughter and to wounding Constable Crews with intent to cause grievous bodily harm.
"Devastation cannot begin to describe what was felt by me when our son phoned that night," Kelvin Crews told the NSW Supreme Court on Friday.
"There's no light at the end of the tunnel."
Const Crews was 26 when he was shot during a drug search in a basement carpark at Bankstown in Sydney's southwest three years ago.
Nguyen did not fire the fatal shot but was charged with manslaughter on the grounds of "excessive self-defence".
The crown has alleged Nguyen, a drug dealer, produced a firearm during the raid and fired it, hitting Const Crews in the arm.
The constable fired three shots in return before a fellow detective fired once, accidentally shooting Const Crews in the neck.
The victim's mother Sharon said she left the family home on September 6 "without a care in the world" to visit her pregnant daughter and young grandchild.
When she returned, it was to help arrange her youngest son's funeral.
"I could still smell him, I thought I could reach out and touch him," she said.
"The last time I reached out and kissed Bill was at the morgue."
"Before Bill's death we had an incredible brotherly bond," he said.
"We were not just brothers, he was my closest friend."
Several of Bill's family members said they had experienced post-traumatic stress, depression and relationship breakdown.
The crown has argued that Nguyen's offences are among the most serious for the charges laid and he had shown "no contrition or remorse".
Sentencing submissions continue on March 8.