An aeronautical engineer by training, Larry Pietrowski worked as a field service engineer for McDonnell Douglas Aircraft Company from 1980 to 1997. In 1997, he joined his father-in-law’s dairy operation in Madera, Calif. Pietrowski is responsible for the construction and maintenance of the facility, which currently milks 6,200 cows three times daily. He has used his engineering background to improve the dairy’s operation through the use of RFID.