Dale Johnson, a 364th Training Squadron petroleum, oil and lubricants apprentice course instructor at Sheppard Air Force Base, Texas, collects a fuel sample at the fuel service center at Cannon Air Force Base, N.M., Aug. 13, 2018. Johnson and Terry Petteway, another 364th TRS POL instructor, visited the 27th Special Operations Wing as part of a program that gets instructors back on an active flightline to experience the POL functions in an operational setting. (Contributed photo)