White hot, or reflecting white? Aluminum is a reflective material. Steel isn't very reflective, and when white hot it throws showers of sparks. These weren't observed.The photographic record of the brightly glowing stream shows it to be white.
Thermite iron is both too dense, and too hot, to have been able to fall outside the building. It is formed at a temperature a thousand degrees Kelvin hotter than the melting point of steel.
At ALL times we should read the thread before entering it. We might just find the talking has been done already. And we haven't been listening.Sometimes we just have to let the other party do the talking for us.
So some aspect of "molten/glowing" not already addressed would be welcome.