Staff Sgt. Joseph Walters, 380th Expeditionary Civil Engineer Squadron electrical systems craftsman, traces electrical circuits, at Al Dhafra Air Base, United Arab Emirates, Feb. 18, 2019. Electrical systems specialists inspect, maintain, and repair fixed and portable airfield lighting systems including runway, threshold and distance marker lights. (U.S. Air Force photo by Senior Airman Mya M. Crosby)