Employee Alertness. 1. The most effective safety equipment an employee possesses is an alert mind. Conversely, an employee whose judgment, reactions and analytical processes are impaired or influenced by alcohol or drugs poses a risk to himself, his fellow officers and employees, and to the public. The City, therefore, expressly retains the right as explained in this Article to verify that employees and officers covered by this Agreement are alert and are not under the influence of alcohol, controlled substances, drugs, or other conditions which would tend to affect or impair judgment, reactions or thought processes.