But there are other indications: police vehicles blocking roads; and the community center in nearby Margaret River offering counseling with television news cameras clustering outside.
Commissioner Dawson said the Margaret River community had banded together to help those affected.
"It is such a small community and it will have a huge effect - is already having a huge effect because in this community we are so well connected", she said.
"The loss of any life is tragic, but four children and three adults, this is a significant tragedy", he told reporters in Perth.
Mr Cockman, who was estranged from Katrina and had been embroiled in a bitter custody dispute with her, said he had not spoken to Peter and Cynda "since they cut me off from my kids".
Police declined to speculate on a motive.
It was believed those who died lived at the property, about 10 minutes drive from Margaret River, a popular tourist destination renowned for its wine, surf and natural beauty.
Three guns - all registered to Peter Miles - were found at the house.
This is Australia's worst mass shooting since a massacre in Port Arthur, Tasmania, claimed the lives of 35 people in 1996.
At least six dead as blasts, gunfire rock Afghan city
On May 6, an explosion at a mosque in the eastern Afghan province of Khost killed at least 10 people and wounded 29. Security forces were able to rescue around 50 employees stuck in the building during the attack, he added.
The generally accepted definition of a mass shooting - four deaths excluding the attacker in a single event - has been met only once in the country since then.
He said only one person was located outside of the buildings.
In 2002 and 2003, following a shooting in which multiple handguns were used, the Australian government further restricted the nation's gun laws, and instituted another buyback. "From a gun-regulation perspective, this horrific shooting raises many concerns about access to firearms, particularly on rural properties".
"We know where the call was made from, we know whose phone it was made from", said WA Police Commissioner Chris Dawson, outside the Margaret River police station on Saturday morning. Some sat outside in the sunshine, talking quietly with one another, while others spoke with professional counselors.
"They were just such lovely people", she said.
"I have extensive handyman abilities and experience with a wide variety of farm equipment, can fix fences, and can tidy up the property from storm damage", the advertisement said. "More customers came through talking about it, and I was shocked".
"It's the sort of stuff you read about in papers that happens somewhere else, not in our own community, and that's going to take some time to get over", he said.
In a land of only 18 million people, almost everyone knew someone, or knew someone who knew someone, who was among the 500 or so people in the small waterfront historic site at Port Arthur that day.
Townshend, the local government president, said the Shire had encouraged anyone needing support to go to the Margaret River Community Center.