Great presentation, a lot of important info for aspiring firefighters, but the background noise produced by other attendees is pretty distracting. Turning your camera and muting your microphone when not in use could help eliminate interferences.
It's a zoom call. This is way better than a lot of the college courses I took. If a little bit of brief intermittent chatter is that big of a deal for you then you should definitely work on that in case you're in a situation that requires focus while there's commotion in the background