Drones in use for high rise fire, don't know where

[raybrag]

Thought this was interesting, found it on Facebook (so it must be real, right?). Have no idea where it was taken. They appear to be using foam of some sort . . . anybody know more about it?

 

[stoegermair]

maybe CAFS -compressed air foam system

I´ve never seen before a drone pulling up a hoseline ten floors up. But the only way i think that can be able is with compressed air.