Neurobiologist

Within minutes of the initial call, or the news-worthy explosion itself?

Of what FD are you a member?

I'm sorry if I am coming off as accusatory, but I think simply saying "on air" or "masked up" is accurate and easy. You know they aren't oxygen tanks. Often people pretending to be in the fire service make the same substitution you did.

A FF saying "oxygen masks" when refering to SCBA masks is really really suspicious. You new to the business sir?