Chipping away from the top
                A massive jackhammer sits outside of a munitions bunker Aug. 31, 2015, at Fairchild Air Force Base, Wash. The tool was used to break away concrete that encased the bunkers. The added concrete was used for extra protection for the already fortified bunkers. (U.S. Air Force photo/Airman 1st Class Nicolo J. Daniello) 
                
                    
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