SIX spotters will be working to ensure community members are doing the right thing.
The men are have been employed by the ALC to watch and report on bad behaviour, particularly by children.
The ALC set up the spotter program after children were found shooting rocks off the Angurugu bridge.
Builders walked off the job and returned to Darwin because they were worried about their safety.
The spotters were given a phone, torch, bicycle, high-visibility jacket and a direct phone link to the police.
ALC chief executive Mark Hewitt said it was a simple community-led solution that stopped the rock throwing.
“It was a simple pro-active thing to do that came straight from community,” Mark said.
“The spotters will continue to work with the community and parents to stop other inappropriate behaviour.”