Spiny Norman said:

Boeing 777-9 performs critical test as brakes reach 2,500 degrees at Edwards Air Force Base.

https://www.reddit.com/r/aviation/comments/1sbhbh2/boeing_7779_performs_critical_test_as_brakes/

This is a very torturous test of the brakes. The energy absorbed by the brake system and radiated is colossal.

Gotta be something better than damn hydraulic brakes.