In the wire production unit of a factory, there is an employee who inspects the quality of the wire as it comes out of the machine that produces it. It has been estimated that the number of defects on the wire follows a Poisson process with a rate of one defect per 100 m of wire produced. One day, during work, the employee is called to answer an urgent phone call and he is absent from his post for 20 minutes. If the machine produces 30 m of wire per minute, find the probability that the employee has missed during his absence more than one defects on the wire.