Found a quite good article about differences on the helmets (and some other firefighting techniques like fognails) in https://www.firehouse.com/safety-health/pp

Found a quite good article about differences on the helmets (and some other firefighting techniques like fognails) in https://www.firehouse.com/safety-health/ppe/helmets/article/21080087/traditional-vs-european-helmets https://www.firehouse.com/safety-health/ppe/helmets/article/... This fognail video was quite interesting also https://www.youtube.com/watch?v=Oe_V7aLyzM8 https://www.youtube.com/watch?v=Oe_V7aLyzM8