li>Travels to communications sites located in various cities and towns, and remote mountaintop locations located in various locations throughout the state of Arizona and all adjoining states, for the purpose of installing and maintaining communications equipment using conventional cars and trucks, 4-wheel drive trucks, towed vehicles, snow-traversing vehicles, and, where appropriate, riding in fixed wing and rotary wing aircraft, in all forms of weather (e.g., extreme heat, extreme cold, rain, blizzard, heavy snowfall, icy roads, muddy roads, etc.). Installs, removes, modifies, repairs, and programs various mobile, portable, and hand held pieces of communications equipment and other electronic equipment (e.g., mobile and hand held two-way radios, mobile and hand held cellular telephones, video recording equipment, mobile data terminals, pagers, sirens, lights, and public address systems, battery chargers, flashlight chargers, tape recorders, remote control robots, etc.) for D.P.S. and D.P.S. supported governmental agencies.