Senior Airmen Eric Vetelino(left) and Staff Sgt. Jacob Lober(right), 379th Expeditionary Expeditionary Maintenance Squadron Precision Measurement Equipment Laboratory craftsmen, check analytical balance during a calibration test Aug. 24, 2016, Al Udeid Air Base, Qatar. The 379th EMS PMEL shop supports the calibration of 13,700 pieces of equipment assigned to over 300 work centers at 24 bases in 10 countries in the Central Command area of responsibiity. (U.S. Air Force photo/Technical Sgt. Carlos J. Treviño/Released)