Cpl. Shane Piazza, scheduling noncommissioned officer at Range Management Branch, checks the branch’s wet bulb globe thermometer in the late morning of June 17, 2013. The device, which determines heat stress flag conditions, is checked every 30 to 60 minutes during the day, every day from May 1 to Sept. 30. - Cpl. Shane Piazza, scheduling noncommissioned officer at Range Management Branch, checks the branch’s wet bulb globe thermometer in the late morning of June 17, 2013. The device, which determines heat stress flag conditions, is checked every 30 to 60 minutes during the day, every day from May 1 to Sept. 30.