Ключевые слова: america, arizona, boulder, bridge, canyon, colorado, concrete, construction, dam, desert, electric, electricity, energy, engineering, famous, generator, hoover, hydro, hydroelectric, industry, infrastructure, lake, landmark, landscape, las vegas, memorial, mike ocallaghanpat tillman memorial bridge, nature, nevada, ocallaghan, outdoors, plant, pole, power, power plant, reservoir, river, rocks, scene, scenic, sign, structure, technology, tillman, tourism, transportation, usa, view, water,