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.
The protected keyword is a member access modifier. A protected member is accessible within its class and by derived class instances. For a comparison of protected with the other access modifiers, see Accessibility Levels. A protected member of a base class is accessible in a derived class only if the access occurs through the derived class type.