Glossary

U

UAH University of Alabama at Huntsville

UARS Upper Atmosphere Research Satellite

UAV Unmanned Aerial Vehicle

UFO UHF Follow-On

UHF Ultra High Frequency; any frequency between 300 and 3,000 megacycles per second

UHT Ukrainian Universal Hand Tool

U.K. United Kingdom of Great Britain and Northern Ireland

UN United Nations

UNSCOM United Nations Special Commission (on Iraq)

U.S. United States

USDA U.S. Department of Agriculture

USD (A&T) Undersecretary of Defense for Acquisition and Technology

USGCRP U.S. Global Change Research Program

USGS U.S. Geological Survey (DoI)

USIA U.S. Information Agency

USML U.S. Microgravity Laboratory

USTR U.S. Trade Representative

UV Ultraviolet

UVCS Ultraviolet Coronal Spectrometer