Senior Airman Shawn Polk, 557th Rapid Engineer Deployable Heavy Operational Repair Squadron Engineer heavy equipment operator, drill holes for dowels Jan. 30 at Al Udeid Air Base, Qatar. Engineers place dowels between slabs of concrete to help support the weight of aircraft. Polk has been in heavy equipment for five years and is deployed with Malmstrom Air Force Base, Mont. ( Air Force photo by Tech. Sgt. Terrica Y. Jones/Released)

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Keywords: afcent, affairs, air, al, base, centcom, dod, force, inherent, operation, public, qatar, resolve, udeid