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.
Nolo's Plain-English Law Dictionary. A group of people protected by law from discrimination or harassment based on their membership in the group. For example, under federal law, race, national origin, sex, and age are examples of protected classes. more. Create Your Own Employee Handbook.