Neither article mentions it. Snark perhaps? Tragic nonetheless.
It was a sarcastic joke, and I enjoyed it.
To my knowledge, the camera is only recording when the sirens are on, not 100% sure if this is true so take it with a grain of salt but I don't think there will be footage.
Speculation: The dash-cam might have some type of buffer that allows for it to save the moments leading up to an officer turning on the sirens though so maybe it is saved.
The dashcam is always on when the lights are on, but I think it can be activated manually as well.