Bucheon fire, unexpected turn of events for air mats

I found it while watching SBS YouTube and when I first jumped,

If you look, there is a material above the upper wind hole.

As people jumped, it turned over like a scab.

https://www.youtube.com/embed/2_EBBUhKrcY?si=ilKiTRUb8GvHZkJ1?playsinline=1&start&enablejsapi=1&origin=https%3A%2F%2Fwww.fmkorea.com&widgetid=1

If you look at 48 seconds, you can see the air mat flipping over.

Don’t belittle the firefighters who are working hard.