As I mentioned in separate email, there isn't an Apache Tribal Nation. There is a Navajo nation, but the rest of the southern Athabascans known as Apaches are divided into many tribes.
Boeing use is obviously very high profile but I haven't been
able to find any mention of them having any deal with the Apache Tribal
Nation over it's use.
It may not ever be an issue, but experiences at this end of the world
just makes me a little wary.