Boeing 777 Diverts due to Front cargo hold fire alarm

You think there would be some screeching in?

There will be more scrutiny going forward.

I've said it before, but I'll say it again: cameras would *not* aid fire detection on airplanes. If you can visibly see a fire within the hold, you've already lost. The detectors are as often inside the wall, inside the wiring, where no human can see (and where you'd need dozens and dozens of cameras to cover every such spot on the plane). The point of these detectors is to detect something wrong before open and self sustaining flame occurs (i.e. smoldering from shorted wires).

(Of course the major exceptions is fires within the cargo itself, but as I said, that's only a fraction of the cases the fire sensors are designed to handle)

They put cameras in the A380 so the pilots could have a view of what was going on around them. Night vision camera's are now pretty cheap. No reason for not doing this.