We get myopic from the systems installed and our subsequent training. Fire is only ever engine, occasionally electrical. We think we have lots of time to sort it out.
Was this a 135, does it have a baggage fire warning? Fire location doesn't seem related to engines, though on ATC they say one quit. They got out a mile and turned around, tower didn't see them trailing smoke when they left, so the tail boom fell off within what, 60 seconds of the fire starting?
Food for thought when you're flying those IA crews around with the 212/412 tail boom full of propane and jugs of gas.