Ключевые слова: america, american, background, celebrate, closeup, concept, construction, country, day, employment, engineer, equipment, flag, force, freedom, happy, hard, hardhat, hat, helmet, holiday, independence, industrial, job, labor, labour, maintenance, mechanic, memorial, metal, national, object, patriot, pride, protect, red, repair, safety, service, states, steel, stripes, symbol, tools, united, us, usa, white, work, worker,