Senior Master Sgt. Dave Herpel
Senior Master Sgt. David Herpel, crew chief assigned to the 175th Maintenance Squadron, performs pre-flight checks for an A-10C Thunderbolt at Warfield Air National Guard Base, Baltimore, MD, October 31, 2014. Senior Master Sgt. Herpel is performing his crew chief duties for the last time as he is preparing to retire after a 40 year military career. (Photo by Tech. Sgt. Christopher Schepers/RELEASED)
PHOTO BY:
Tech. Sgt. Christopher SchepersRELEASED
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