The "evacuation route" and crossbars guiding you through can be seen (at least last time I looked) in Umatilla, OR. US Army chemical weapons depot...they are d

The "evacuation route" and crossbars guiding you through can be seen (at least last time I looked) in Umatilla, OR. US Army chemical weapons depot...they are disposing of some nasty stuff there. If there is a leak they shut down certain roads apparently.