U
- UAS - Unmanned Aircraft System
- UAV - Unmanned Aerial Vehicle
- UCI - Unit Compliance Inspection
- UNWT - Undergraduate Network Warfare Training
- UPT - Undergraduate Pilot Training
- USAF - United States Air Force
- USAFA - United States Air Force Academy
- USAFE - United States Air Forces in Europe
Read more about this topic: List Of U.S. Air Force Acronyms And Expressions