Staff Sgt. Andrew Harris, a crew chief assigned to the United States Air Force Air Demonstration Squadron "Thunderbirds", performs pre-flight checks as part of his morning routine Jan. 30, 2020, at Nellis Air Force Base, Nevada. Harris his responsible for performing scheduled inspections, functional checks, and preventive maintenance on aircraft. (U.S. Air Force photo by Senior Airman Andrew D. Sarver)
Members of the United States Air Force "Thunderbirds" perform a foreign object debris walk to start their day at Nellis Air Force Base, Nevada, Jan. 30, 2020. The team walks around the flightline and hangar every morning before operations to ensure nothing on the ground can get sucked into the intake of a jet. (U.S. Air Force photo by Senior Airman Andrew D. Sarver)
