Aircraft power plant repairer Army Spc Kathleen Scanlon, who holds a doctorate in geology, uses a torque wrench to secure the bolts of a forward support tube onto an UH-60 Black Hawk engine in a maintenance shop at Camp Taji, Iraq, March 23, 2018. Aircraft power plant repairers supervise, inspect and perform maintenance on aircraft turbine engines and components ensuring airplanes and helicopters are safe and ready to fly. Army photo by Staff Sgt. Leticia Samuels