Heather Bancroft is a Clinical Psychologist who has worked in both the public and private sectors. She has significant experience working with emergency service personnel as a psychologist, consultant, trainer and clinical director, and developed a keen interest in the mental health of first responders from both an individual and organisational perspective. She has spent the last 4.5 years pursuing her interest by completing a PhD through Phoenix Australia, Centre for Posttraumatic Mental Health at The University of Melbourne. The study was funded by the Bushfire and Natural Hazards CRC and it investigated the mental health of career and volunteer firefighters from four Australian fire services and incorporated a longitudinal design comprising a self-report survey and a clinical interview. Apart from investigating the prevalence rates of the mental health disorders commonly associated with increased exposure to trauma, the study also investigated the contribution of a range of factors (individual, acute stressors, operational and organisational factors) on better and worse mental health outcomes.