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 specifies access to class members in the member-list up to the next access specifier (public or private) or the end of the class definition. Member functions of the class that originally declared these members. Friends of the class that originally declared these members.