Staff Sgt. Frank Ruckel, 49th Maintenance Squadron Aircraft Metals Technology shift lead, instructs Airman 1st Class Philip Giampaolo, 49th MXS metals tech apprentice, how to make external threads at Holloman Air Force Base, , April 6, 2015. The term used in shop for external threads is turning. Staff Sgt. E’Lysia A. Wray

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Size: 1938px × 1290px
Photo credit: © PJF Military Collection / Alamy / Afripics
License: Licensed
Model Released: No

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