Maintain a working knowledge of all equipment, which includes but not limited to the x-ray machine, medical tools and equipment, respirator fit machines, pulmonary function machines, audiometry machines, audio fit testing machines, functional capacity machines, and breath alcohol machines. The employee frequently is required to stand, walk, sit, use hands to handle training equipment and tools, reach with hands and arms, climb or balance, stoop, kneel, crouch, and crawl.