Wonder if this might have helped?
EVAS - Emergency Vision Assurance System
A UK CAA report (in 2002) supports the generally held view that, from the first indication that there is a fire onboard the aircraft, the crew historically has approximately 17 minutes to get the aircraft on the ground.
See:
Fire in the Air
and:
In-Flight Fire: Guidance for Flight Crews
Fighting a fire on the main cargo deck of a freighter, i.e. when there's only two crew members onboard is almost an impossibility, especially when you consider that a fire that goes undetected for even 2 minutes can turn into a monster to deal with.