In the early 1950s the airport was served by the original Frontier Airlines (1950-1986) which flew DC-3's on a route from El Paso to Phoenix that included stops at Las Cruces, Deming, and Lordsburg, NM as well as Clifton, Safford, and Tucson, AZ.
A protected group is a group of people qualified for special protection by a law, policy, or similar authority. In the United States, the term is frequently used in connection with employees and employment.
A Protected Designation of Origin (PDO) is part of the Protected Geographical Status system in the European Union (EU). This framework is designed to protect the integrity of European food and drink by carefully legislating the labeling of certain European products.