Ft. Mojave Tribe

The Fort Mojave Reservation is located in the corner of Nevada, California, and Arizona. Fort Mohave Reservation encompasses land at the convergence of three states, Arizona (23,669 acres), California (12,633 acres), and Nevada (5,582 acres) and is situated along the Colorado River. The tribe is noted for beadwork and basketry.

The Fort Mojave Tribal Police headquarters is actually located in Mojave Valley, Arizona.

These are both old style, and if you look you will see several significant variations between the two. I'll give you the easy one. Look at the black line going up the river next to the NEV.
There are several different types of this new style.
The police handle all criminal activity, and the Rangers handle things like illegal dumping on the reservation, dangerous animal calls, etc.
This is the Band patch, although I don't know their function. Anybody know? I recently missed getting the Fish and Game Officer patch, which is just like these circular gold ones.