Chris Vinson, City of Dover electric technician, works to replace a part that failed at an electrical substation Aug. 27, causing Dover Air Force Base to lose power for more than two hours. The failure caused the breakers on the substation to short out, cutting power to the base and some surrounding neighborhoods. (U.S. Air Force photo/Roland Balik)
An insulator was damaged when a part failed at an electrical substation Aug. 27 causing Dover Air Force Base to lose power for more than two hours. The insulator is designed to protect the more sensitive parts of the electrical substation. (U.S. Air Force photo/Airman 1st Class Matthew Hubby)
A City of Dover electric technician replaces a part that failed Aug. 27 causing Dover Air Force Base to be without power for more than two hours. (U.S. Air Force photo/Roland Balik)