Metals technology provides parts for B-52H Stratofortress
Senior Airman David Reid, 2nd Maintenance Squadron Aircraft Metals Technology journeyman, uses a computer numeric control machine to cut a hole in a cruise missile cowling on Barksdale Air Force Base, La., June 10, 2014. For some aircraft parts, dimensions of metal pieces and holes that are cut must be measured to within a thousandth of an inch. (U.S. Air Force photo/Airman 1st Class Benjamin Raughton)