Tdracer
It probably bears noting here that a significant percentage of fire warnings are either false alarms, or simply nacelle overheats related to things like burst ducts
Which is true and a few reject takeoffs due to fire warning even after V1 resulting in runway overrun were found to be false alarms. While there is no doubt that Checklist should always be done and are done but perhaps you could shed some light when the checklist goes silent after the second agent discharge and the fire is not out. Although not many incidents but why would it happen and how serious would be the implications. Thanks