Staff Sgt. Howard Gopie, 11th Civil Engineer Squadron electrical systems craftsman, and Airman 1st Class Nathaniel Shephard, 11th CES electrical systems apprentice, use a high-voltage phase tester to ensure a high-voltage circuit is de-energized in preparation for repair an upcoming repair Oct. 7 here. The electrical shop is replacing a damaged fuse cutout and lightning arrestor assembly. (U.S. Air Force photo by Senior Airman Perry Aston)