U.S. Air Force Senior Airman Timothy D. Burrows, 157th Logistics Readiness Squadron fuels lab technician performs a quality control test on jet aircraft fuel, Pease Air National Guard Base, N.H., April 21, 2016. Burrows is assigned to the POL (petroleum, oil, lubrication) section of the 157 LRS. (U.S. Air National Guard photo by Staff Sgt. Curtis J. Lenz)