Air Force Staff Sgt. Eric Kerr, a fabrication flight metals technician with the 379th Expeditionary Maintenance Squadron, “tacks” pieces of metal together using a welder at Al Udeid Air Base, Qatar, Feb. 2, 2017. Tack-welding is used as a temporary means to hold components in the proper location, alignment, and distance apart until final welding can be completed, and is done by fusing the pieces together at a single point.

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Photo credit: © Conner Flecks / Alamy / Afripics
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Keywords: 379th, aew, afcent, air, al, archive, armed, auab, base, centcom, defence, expeditionary, forces, grand, military, qatar, reportage, servicemen, slam, udeid, usa, wing