The 423d Civil Engineer Squadron (CES) is a unit of the United States Air Force responsible for civil engineering services. Based at Joint Base Lewis-McChord in Washington state, its main role involves the planning, coordination, and execution of civil engineering projects to support U.S. Air Force operations both domestically and abroad.The 423d CES falls under the jurisdiction of the Air Force Civil Engineer Center (AFCEC) and contributes to various aspects of infrastructure, including airfield operations, construction, maintenance, environmental management, and disaster response. Personnel within the squadron work in collaboration with other military branches and agencies, as well as civilian contractors, to ensure the readiness and sustainability of U.S. Air Force bases.The 423d CES’s mission is essential to maintaining operational capabilities for the U.S. Air Force and directly impacts the quality of life for service members and their families stationed at assigned locations.