I often come across glass panels that are attached to the edge of the ceilings of public interior areas.
What purpose do they serve?
These are fire traps required by code. flames rising up from the initial fire don't get a chance to spread to neighboring areas.
The automated fire sprinklers will deploy in a smaller area thus eliminating the shortage of water.
Also, emergency partitions deploy in a smaller area, with less crowd to use the exits, and many other advantages!