A story from the Canberra Times dated 19 November reports the findings of a new study that emergency workers, including firefighters, who are already at increased risk from shiftwork and erratic hours, are paying a high psychological and physical price for being the first on the scene of deaths, traumas, violence, chaos, disease and extreme temperatures. The news story is available at: http://www.canberratimes.com.au/national/emergency-workers-pay-high-price-for-being-first-on-the-scene-20171113-gzkrk3.html
A link to the study is available here, but subject to purchase for the full findings: https://www.sciencedirect.com/science/article/pii/S0020138317306319