FRESNO, Calif. --A quick thinking employee foiled an armed robbery attempt at a medical pot dispensary in Old Fig Garden Tuesday. Fresno County Sheriff's Deputies said a suspect walked into the Central Valley Collective, posing as a patient before demanding marijuana. As an employee complied with the suspect's demands, he managed to lock the suspect out of the building. "It was actually a good thing for him to do. He realized when he was going into the place where the marijuana was being kept, he had an opportunity to keep himself safe and lock the bad guys out," said Fresno County Sheriff Margaret Mims.