20 years ago - the FBI would have been all over this - video and audio - in real time - that would be a big 'no no' because of the terrorists
Today - meh
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Caldor Fire and Dixie Fire in California - live scanner audio from Broadcastify plus all sorts of contextual information - from Lookner and Kathyrn Davidson
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The closest analogy from 'official' public safety sources that I can think of is Saint Louis FD - their PIO was live streaming snippets from some fires live via Twitter (and including some radio chatter)
Otherwise I cannot think of any other public safety agency that does live programming from incidents
The "openness" dream struggles to march forward