CHILCHINBETO, Ariz. (AP) — Work crews from the Los Angeles Department of Water and Power are partnering with the Navajo Tribal Utility Authority to extend powerlines to homes in several tribal communities including Chilchinbeto, Kayenta, Chinle, Kaibeto …CHILCHINBETO, Ariz. (AP) — Work crews from the Los Angeles Department of Water and Power are partnering with the Navajo Tribal Utility Authority to extend powerlines to homes in several tribal communities including Chilchinbeto, Kayenta, Chinle, Kaibeto …