Felicia owns a harvesting machine that she uses to harvest wheat. She operates her harvester on many different farms each year. Her job is best described as a(n) . Oscar orders, stocks, and sells parts for tractors and other farming equipment. He works for a tractor dealership and frequently visits different farms to meet customers and show them his products. Oscar's job is best described as a(n) . Jodi is a mechanic who specializes in fixing broken truck and tractor engines. She sometimes works at a tractor dealership and sometimes visits farms to fix broken-down equipment. Jodi's job is best described as a(n) .