Senior Airman Wilfredo Vargas, 911th Maintenance Squadron jet propulsion technician, inspects engine blades for deficiencies before an eco-wash at March Air Reserve Base, Calif., Jan. 9, 2020. The technicians check engine inlets ensuring there is no damage before the engine receives an eco-wash as that could cause further damage to the engine. (U.S. Air Force photo by Joshua J. Seybert)