From what I got out of the article, it looks they will primarily be using the 747 to rework areas where the fire had just recently been extinguished so that it does not flare back up during the night hours.
I haven’t seen it used at night here, so it’ll be interesting to see if they try that. From their description, it appears they’re of the mistaken opinion that you can extinguish these things from the air. You fight them on the ground from the flanks. Air resources are helpful, but mostly you have to get a trail around them.
You can get the effect they’re describing if you get high winds at night, but local weather doesn’t show any, so it’s probably just a rekindle from having done an inadequate suppression job on the ground due to personnel shortages. The US is sending three ground crews over for probably just that reason. I’ll bet that Bulgarian ground crew’s pretty active too.
Man, I don’t envy the communications officer on this thing. It’s tough enough in the US with different departments on different frequencies, imagine twenty different countries. The problem’ll be mitigated for air resources, since the frequencies are in use worldwide and English is the standard language.