Ross Beckley can't stand the sight of white crosses on the side of the road.
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They actually make him mad.
He's witnessed the aftermath of 50-odd fatal crashes and the memories sit just below the surface - waiting for a trigger, like a cross, to taunt him.
Mr Beckley, a veteran firefighter, has slowly learnt how to better handle his triggers and how to deal with his psychological scars.
But he believes the culture of emergency services makes it tough for people to come out the other side.
"You go to job after job and all the while you get trained to switch off, show no emotion, you don't get taught about signs or symptoms and then eventually you hit the wall," Mr Beckley said.
"When it happened to me, I stayed in the job for another two or three years, I wanted to keep doing the job I loved," he said.
"When I did hit the wall, I looked back at my career and thought 'what's missing? What's not there? What would I have liked to have been told before I hit the wall?"'
That's when Mr Beckley - who has 20 years' front-line experience including training new recruits - and his partner Veronique Moseley, an experienced social worker, decided to share their knowledge and experiences with other front-liners.
Two years later they have a successful training program which is being used by emergency service organisations and universities to help train first-line responders including paramedics.
Behind The Seen is designed to work as an "additional" training package for systems already in place within the relevant organisations.
The focus is on awareness, prevention and the development of sustainable support networks.
In a nutshell, the pair want to increase awareness about the effects of work-related stress on emergency services workers, their families and the general public.
They work to reduce the stigma of post-traumatic stress disorder (PTSD), depression and other stress-related issues and change the "harden up and sweep it under the rug" culture.
"This program has been specifically designed for all emergency service workers including fire brigade, rural fire service, ambulance, police, Volunteer Rescue Association and the State Emergency Service," Mr Beckley said.
"It's a down-to-earth approach that takes the term pre-planning beyond the requirements of the job to the people on the front line who carry out the job."
The couple are based in NSW but travel to where they are needed. They are now running sessions in country areas of Western Australia and are booked in Queensland.
To fund sessions, they work with sponsors, and groups also have fund-raising events.