PMEL enhances mission readiness
SHAW AIR FORCE BASE, S.C. -- Airman First Class Joseph Bain, 20th Component Maintenance Squadron equipment technician, uses a height gauge meter to check the surface of a collimator here March 30. The Precision Measurement Equipment Laboratory calibrates a wide variety of tools and equipment to ensure that the equipment is ready to use. (U.S. Air Force photo/Airman 1st Class Neil D. Warner)