Essential abilities for the safe execution of duties include good vision and hearing; full mobility on steps and ladders; adequate dexterity and mobility in both arms (or mechanical alternatives) to operate hand and power tools, gauges, and valves safely. May involve lifting, pushing, pulling, up to 75lbs, and transporting equipment, and candidates may encounter challenging environmental conditions, such as dirt, noise, heights, and confined spaces, necessitating caution for safety.