U.S. Air Force Gen. Mark Kelly, commander of Air Combat Command, right, commends Senior Airman Kostiantyn Khymchenko, 633rd Civil Engineer Squadron heating, ventilation, air conditioning journeyman, on a job well done at Joint Base Langley-Eustis, Virginia, June 29, 2023. Air Combat Command is the lead major command for Combat Air Forces operating worldwide and providing the necessary support for air, space, and cyber-power employment. (U.S. Air Force photo by Airman 1st Class Mikaela Smith)