Achievements are in my experience a first step to go ahead. I would present my commitment and my background. As a catholic teacher and director I am and must be an example for my students.Team work as a base to get goals.
Interview between candidate, HR and department head.
Once past this stage, and hired, police check. If the police check clears, then you're on to the training process. This is done online and submitted to HR.
On assignments, you check in and out at the front office. Security is taken seriously.