Desert bighorn sheep establish two desert areas in southwestern Arizona to help preserve the desert bighorn sheep: Cabeza Prieta National Wildlife Refuge and the Kofa National Wildlife Refuge. In 1941, the San Andres National Wildlife Refuge in New Mexico was added. Desert bighorn sheep populations have trended upward since the 1960s when their population was estimated at 6,700-8,100. The upward trend was caused by conservation measures, including habitat preservation. In 1980, desert bighorn sheep populations were estimated at 8,415-9,040. A state-by-state survey was conducted a few years later and estimated the overall US desert bighorn sheep population at 15,980. The 1993 estimate of
Desert Uniforms, Patches, and Insignia of the US Armed Forces Desert Uniforms, Patches, and Insignia of the US Armed Forces Desert Uniforms, Patches, and Insignia of the US Armed Forces is a comprehensive reference book that provides a detailed study of desert uniforms, patches, and insignia worn by the US Armed Forces in combat from Desert Storm, through Somalia and in the campaigns of Iraq and Afghanistan. The book is the definitive reference of desert combat uniforms, patches and insignia worn by the US Armed Forces in Desert Storm, Somalia, Iraq and Afghanistan. It covers information on US Army, Navy, Air Force, Marine Corps, and Coast Guard desert uniforms and