A Well-Oiled Machine

U.S. Air Force Senior Airman Johnathon Copeland, 99th Civil Engineer Squadron electrical power production apprentice, conducts scheduled maintenance on an Emergency Standby Generator during an annual inspection at Fire Station 3 Jan. 6, 2012, at Nellis Air Force Base, Nev. 99th CES power production Airmen provide maintenance for more than 60 generators on Nellis AFB. U.S. Air Force photo by Staff Sgt. Christopher Hubenthal.

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