The operations of a manufacturing / assembly You are a Shift Supervisor. You supervise 6 departments during your 8-hour shift. Four people work in each department on your shift. There's one operator, one assistant operator and two laborers in each department. Departments are separated from hallways/aisle ways via plastic curtains. The departments are also separated by 20 feet hallways/aisle ways for lift trucks to move raw materials and finished product to and from the warehouse. Employees on your shift have complained about someone, currently unknown, who is spitting up into the water fountains located strategically throughout the plant, outside of the departments, and in the walkways/lift truck aisle ways located throughout the plant. An employee lets you know anonymously that she thinks that it is Lu Ella, an older employee on your shift, who is splitting up into the drinking water fountains. Evidently, some of the employees who have worked with Lu Ella for years are cleaning up the drinking fountains after she drinks to cover for her. Note a picture of the drinking water fountain provided below. You, as the shift supervisor, have not noticed anything in the water fountains until a couple of workdays after the anonymous message