![](http://www.alamy.com/thumbs/6/338B0EBD-54A6-465C-B4AA-1F318A830D6A/M18K7Y.jpg)
Air Force Staff Sgt. Christopher Anderson (left) and Senior Airman Christoffer Horner, 909th Aircraft Maintenance Unit KC-135R crew chiefs, perform an engine power run Jan. 25, 2018, at Kadena Air Base, Japan. KC-135R Stratotanker crew chiefs look for discrepancies such as leaks, smoke or damage during a power-run. ( Air Force
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