We had our district security manager and his assistant in our center yesterday and they went on the road to observe some of the drivers, mostly those that deliver in the city or close by. Most of the drivers were doing everything right but they did catch one driver who was not wearing his seat belt, had the bulkhead door open and had not fastened the chain on the rear door. He was in a plaza delivering stops that were close together and didn't think it necessary to follow the methods. The manager went in to the pkg car, removed a NDA pkg, and left, only to come back in a few minutes to T/W the driver. Well, the driver had a chat with the center manager this morning and earned a 3 day unpaid vacation for his inability to follow methods. We were also told that, had this been a TSA inspector, the center could have been fined $25,000 and the driver could have been fined $2,500. The center could have also been closed down until TSA decided to reopen it.