The U.S. Department of Energy's GATEWAY program has released the third report in a series documenting the performance of LED luminaires in the Yuma (Arizona) Sector Border Patrol Area, on the U.S.-Mexico border, which is a high-temperature, high-solar-radiation environment. The first report compared six LED luminaires installed in February 2014 to the incumbent high-intensity discharge (HID) lighting system, and the second discussed the performance of the LED system after 2,500 and 5,000 hours of operation, including unanticipated illuminance changes.