The Navajo Rangers (formed 1957[2]) is an organization of the Navajo Nation in the Southwestern United States, which maintains and protects the tribal nation's public works, natural resources, natural and historical sites and assist travelers.

He soon after began work in Archaeology as a student assistant in the Los Angeles Museum of History, Art and Science.

Valkenburgh developed a strong interest in the Indians of Southern California and Arizona during his archaeological research in these areas.

Valkenburgh was employed by the Bureau of Indian Affairs to oversee research on land problems, but then resigned in 1942.

To safeguard and preserve the livestock property of residents to maintain the cultural and traditional significance of this resource for future generations of Diné.

Some of these areas of responsibility include but are not limited to cultural resources, forestry, parks and scenic areas, fish and game, back country patrol, all-terrain vehicle patrol, search and rescue, technical rescue, boat operations, mud flood snow emergencies, and wild land fire investigation and response.

Dover, along with his partner, Stan Milford, have come across reports of several different instance of paranormal activity and sightings such as ghosts, UFOs, Bigfoot and even creatures in Navajo folklore like skinwalkers (witches that can shape-shift into animals).