This publication discusses the challenges encountered by first responders during regular duty as well as following disasters, sheds more light on the risks and behavioral health consequences (such as post-traumatic stress disorder, stress, and depression) of serving as a first responder, and presents steps that can be taken to reduce these risks either on the individual or institutional level.
https://www.samhsa.gov/sites/default/files/dtac/supplementalresearchbulletin-firstresponders-may2018.pdf