Random testing is different from reasonable suspicion testing. You are probably correct that random testing is protected under union contract. Reasonable suspicion testing allows a test if an employee is suspected of being under the influence OTJ, regardless of union language. If this particular officer had been displaying bizarre behavior, physical symptoms, or job performance decline, that employee could be subject to reasonable suspicion testing.  The simple fact that cocaine is mentioned in this article could have triggered reasonable suspicion testing. Problem is cocaine leaves your system fairly quickly.