Before and after photos are taken of the 62nd Aircraft Maintenance Squadron aircraft chocks Sept. 26, 2016 at Joint Base Lewis-McChord, Wash. The plastic chocks (right) with nylon rope will replace the commonly used wooden chocks (left) and cotton cloth rope that degrade quickly from daily use and the Washington rain. The wooden chocks were replaced every four months, but replacing them with the plastic chocks will reduce the replacement rate with a potential ten year cost savings of $154,600. (U.S. Air Force graphic/Senior Airman Divine Cox)
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