Tri-Cities RACES is expanding its use of AREDN technology. Images here are of the portable AREDN server "rack" built by Bill Kreutinger (KM6SLF).
It hosts several useful mesh services, including a PBX server, file server, text, voice, video and screen sharing meeting servers, and an integrated collaborative document server, and other web-like services.
You can learn more about AREDN at www.arednmesh.org
There's also an informative YouTube video here: https://www.youtube.com/watch?v=4ezz-riTpXE