All of Schildwachter technicians are not only highly skilled with years of experience under their belts - they're also company certified. They must pass rigorous screening before they can work for us. But we feel it is well worth it. With Schildwachter, you don't have to worry about your property or your safety ... ever. Each man has his own photo-identification. Our fuel oil truck drivers have ourtruck and your delivery ticket as identification.They also have their photo-identification Commercial Drivers License. They guard your environment with their careful, clean fuel delivery.