The beginning audio is 4 people (I think: two men, two women) talking in Japanese about what they are seeing happening. At first they’re talking about the huge amount of smoke, and a discussion on how much it’s possibly still on fire inside the buildings. They ask him to zoom in to try and see how big the flames are on inside the structure.
When the first tower collapses, the conversation quickly becomes one of shock and dismay. “Oh no!”, “I’m scared!” “This can’t be happening!”, etc.
Then of course they quickly realize the cost in human lives is going to be huge. “They’re all gone”, “Everyone at ground level is in danger too.” “Even the people on the ground nearby are probably dead.” “The surrounding buildings have probably collapsed as well.” “Any news crews nearby have probably perished.”
They also start speculating as to the cause of the collapse. At 1:40 the woman says, “That can’t just be from the fire, can it? There must have been some other explosion or something? I mean, it collapsed from the bottom, didn’t it?”
The conversation changes to English after 2:00, so there’s no need to translate after that.
Seeing how even at the very beginning they were thinking it had to have been an explosion or something, it really does show how lack of understanding of physics and corresponding lack of trust in the intelligentsia in general contributed to the conspiracy theories that surrounded the collapse of the towers, even from day one.
