372nd Training Squadron Detachment 21


  • Optimize aerospace maintenance training to best support the Intelligence, Surveillance and Reconnaissance (ISR) missions of the 9th Reconnaissance Wing.
  • Train and Inspire Warriors
  • Make great maintainers and communicators even better
  • Deliver state-of-the-art maintenance and communication training to DOD warfighters and international partners – anytime, anyplace! 


Provide field training and training support that makes a lasting difference. 


 Detachment 21 of the 372d Training Squadron, 982d Training Group, Sheppard Air Force Base, Texas, provides world class aircraft maintenance training to the 9th Reconnaissance Wing and its partners within the ISR community.

Thirteen instructors from across 7 career fields develop and deliver 25 formal aircraft maintenance courses covering in-depth theory of operation for Mission Ready Airmen and advanced troubleshooting on the U-2 aircraft systems, T-38 egress systems and aerospace ground equipment. Detachment 21 trains approximately 300 students annually and is a Community College of the Air Force-affiliated school. Detachment 21 is the only Right Time Training technical training facility for the U-2 in the entire Air Force.

In addition to supporting the 9th Reconnaissance Wing, Detachment 21 also provides world class aircraft maintenance training for other active, reserve and guard units; civilian agencies, and partner nation forces. 



372 TRS/DET 21, 19501 Edison Ave., Suite 400, Beale AFB, CA 95903; telephone: (530) 634-2545, DSN 368-2545 (Detachment Senior Enlisted Leader: MSgt MSgt Richard Zehnpfund).  Normal business hours are Monday through Friday 7:30 am to 4:30 pm.