U.S. Air Force Airman 1st Class Colton Ash, 633d Civil Engineer Squadron water and fuel systems maintenance apprentice, holds the controller of a vacuum system at Joint Base Langley-Eustis, Virginia, Aug. 9, 2024. The controller manages and regulates the operation of the system, ensuring that the vacuum pressure is maintained at the correct levels. (U.S. Air Force photo by Airman 1st Class Skylar Ellis)