The 451st Expeditionary Maintenance Squadron (EMS) is a maintenance unit within the United States Air Force, specializing in aircraft and systems repair and maintenance. This squadron plays a crucial role in ensuring operational readiness of U.S. aircraft in various theaters worldwide.The 451st EMS was initially established as a permanent unit in 2007, but its roots trace back to earlier squadrons dating from the mid-1950s. The squadron is currently under the operational control of the 380th Expeditionary Wing at KC-135 Stratotanker units, providing maintenance and logistics support for this strategic air refueling aircraft.The 451st EMS’ mission includes repairing, maintaining, modifying, overhauling, and altering aircraft and associated systems. The squadron also offers specialized technical guidance and troubleshooting assistance to other units as needed. Personnel of the 451st EMS are deployed to support various combatant commands around the globe.The primary location for the 451st Expeditionary Maintenance Squadron is at RAF Mildenhall, Suffolk, United Kingdom; however, due to its expeditionary nature, it can be found in numerous other locations depending on operational requirements.