Christopher Falkowski, facilities engineer with Engineering Services & Support Branch of the Materials and Manufacturing Directorate, observes a new light bulb being lifted into its socket at Joint Base Langley- Eustis, Virginia, April 30, 2019. Falkowski was sent in from Wright-Patterson Air Force Base, Ohio, to help aid in changing these light fixtures. (U.S. Air Force photo by Airman 1st Class Marcus M. Bullock)