A granite table, weighing a ton, is used to represents a true flat surface when 379th Expeditionary Expeditionary Maintenance Squadron Precision Measurement Equipment Laboratory is balancing equipment. Staff Sgt. Jacob Lober, a PMEL craftsman, went on to explain that the table aids technicians in finding a stable reading when the PMEL repairs rquipment Aug. 24, 2016, Al Udeid Air Base, Qatar. (U.S. Air Force photo/Technical Sgt. CarlosJ. Treviño/Released)