“…In police officers, researchers also examined the stress response to high fidelity simulation of policing events [ 44 ] and the effects of personal protective equipment during an occupational physical ability test (OPAT) [ 37 ]. Additionally, in firefighters, multiple live-fire training scenarios were investigated both with and without personal protective equipment (PPE) and self-contained breathing apparatus (SCBA) masks [ 29 , 30 , 34 , 36 , 42 , 43 , 55 , 56 , 57 ]. Military personnel were examined during combat simulations [ 24 , 26 , 46 , 47 , 49 , 50 , 62 , 63 ], cargo flights and parachute jumps [ 21 , 25 , 31 , 45 ], underwater evacuation training [ 54 ], selection courses [ 27 , 28 , 35 , 39 ], and longer term (5+ days in length) military field training [ 15 , 16 , 23 , 38 , 40 , 41 , 51 , 52 , 53 , 64 ].…”