NDI: Seeing the unseen

Senior Airman Lucas Derflinger, non-destructive inspection journeyman, 108th Wing, prepares to perform a process control using a ketos ring and a central bar conductor on the magnetic particle inspection unit at Joint Base McGuire-Dix-Lakehurst, N.J., March 7, 2015. The New Jersey Air National Guard NDI Airmen provide support to the structural maintenance program, which ensures that the KC-135R Stratotankers are mission-ready. (U.S. Air National Guard photo by Master Sgt. Mark C. Olsen/Released)

PHOTO BY: Master Sgt. Mark C. OlsenReleased
VIRIN: 150307-Z-AL508-014.JPG
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