Somewhere around the 76th floor, which as weve seen, is well below the most affected area of the building. The fact that Clark saw no inferno there tells us nothing that we didnt know already.I did mention that I have a radio traffic clip from an NYC Fire Captain who was on the 76th floor and radioed down that he only needed two lines to put out the fires. Seconds later, the tower collapsed.
The claim is based on recordings of radio messages from FDNY Chief Orio J Palmer, who was climbing the south stairway in WTC2. Heres the relevant portion: Palmer is Battalion Seven Chief:
Battalion Seven Chief: "Battalion Seven to Battalion Seven Alpha."
"Freddie, come on over. Freddie, come on over by us."
Battalion Seven Chief: "Battalion Seven ... Ladder 15, we've got two isolated pockets of fire. We should be able to knock it down with two lines. Radio that, 78th floor numerous 10-45 Code Ones."
Ladder 15: "What stair are you in, Orio?"
Battalion Seven Aide: "Seven Alpha to lobby command post."
Ladder Fifteen: "Fifteen to Battalion Seven."
Battalion Seven Chief: "... Ladder 15."
Ladder 15: "Chief, what stair you in?"
Battalion Seven Chief: "South stairway Adam, South Tower."
Ladder 15: "Floor 78?"
Battalion Seven Chief: "Ten-four, numerous civilians, we gonna need two engines up here."
Ladder 15: "Alright ten-four, we're on our way."
The Memory Hole:Web Archive source
It seems Palmer did only see two isolated pockets of fire at this point, although whether there may have been fire elsewhere on the floor isnt clear. So does this prove the fires were much weaker than claimed? Well, no. Not even close.
NIST do not claim that the 78th floor was a raging inferno, for instance. In fact the NIST fire reconstruction report says there was only light fire activity observed on the 78th floor, page 109). No surprise: pictures in the same document clearly show this floor was at the base of the fire-affected area..