The National Agricultural Statistics Service (NASS) surveys United States and Puerto Rico agriculture for the purpose of making estimates on crops, livestock, production practices, farm economics, etc. The Wheat Objective Yield Survey requires field enumerators to physically go to sampled wheat fields, lay out two objective yield units and record various crop counts. Field enumerators return to the same locations every month and record various crop counts until the fields are harvested. Sometimes a field enumerator has difficulty or is unable to find the same location again. This costs NASS in field enumeration time, and in those instances where the units are unable to be found again, the data quality suffers. In 2005, NASS researched whether providing field enumerators with handheld Global Positioning System (GPS) receivers would be beneficial in finding the Wheat Objective Yield Survey units on subsequent field visits.