The position entails working on a busy construction site overseas, generally away from the employee’s family, and in countries whose laws and social norms may be much more restrictive than in the United States, with the potential for occasional periods of social unrest, military action, interruption of normal services such as electricity and water, natural disasters, and the like. The employee must have the ability to regularly and for extended periods of time stoop, squat, stand, walk, twist, balance, climb (ladder and stairs of high-rise building), kneel, crouch, speak, carry, and hear.