I updated the Military Training Routes KML file as well as the Special Use Areas KML file on the Sept. 20 FAA data cycle. Both are in the KML folder here.
I also found an interesting new site that has more KML files available, as well as an MTR KML file with a different data source. This is the first time I've been able to check my work against anyone else's. In Google Earth, it's very easy to have two layers and compare them.
The source on the other file is the DoD's DAFIF file, which is now FOUO. That's For Official Use Only, as in not for public release.
The BLM (Bureau of Land Management, part of the Department of the Interior) has an inter-agency airspace coordination site to help coordinate flight restrictions around forest fires. Under that site is a directory of KML files.
The MTR information is close on both files, with the exception of "Slow Routes." I guess the DoD's DAFIF files include "Slow Routes" but the FAA's text data has no such type of MTR listed.
