Senior Master Sgt. Christopher Zorn, 434th Aircraft Maintenance Squadron production superintendent, inspects a row of screws ensuring security on a KC-135R Stratotanker at Grissom Air Reserve Base, Ind., Dec. 18, 2017. Zorn was recently awarded the General Lew Allen, Jr., Trophy award, an award that credits the accomplishments of senior NCOs in their performance of aircraft, munitions or missile maintenance directly involved in aircraft sortie generation. (U.S. Air Force photo/Staff Sgt. Katrina Heikkinen)
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