The families of the Crandon shooting victims are suing Forest County and the city of Crandon.

They're asking for money and a change in the way prospective law enforcement officers are screened before being hired.

In 2007, Tyler Peterson shot and killed 6 people and wounded a seventh at a house party, before taking his life.

Peterson was a Forest County deputy and a Crandon Police officer.

Now, the lone survivor, Charlie Neitzel and the victims' families are looking for justice.

Their attorneys are trying to prove that the Forest County Sheriff's Department hired Peterson without having him take any psychological tests.

They also claim both city and county leaders ignored warning signs, including allegations of domestic abuse with a former girlfriend.

They believe if Peterson had a mental evaluation, the sheriff's department would have discovered what they call a "narcissistic personality."

Families claim the combination of his mental health, ego, and county-issued gun, which became the murder weapon, proved to be lethal.

"During the party, when he was being obnoxious, they said 'we are going to call the cops' and he said, 'I am the cops," says Jim Olson, the attorney for the victims' families.

The defense, however, says Peterson passed all required screenings.

That included an examination by a Wisconsin licensed doctor, an interview with a civilian board, and he did not have a felony record.

The attorney says Peterson even had a recommendation from the step father of his ex-girlfriend, Jordanne Murray, who was one of the victims.

They also claim Peterson's actions had no connection to his law enforcement job - since he was off-duty, and drove his personal car to the scene.

The judge has not ruled yet if the case will go before a jury.

He wants to review documents in the case before making his decision.