United States Department of Energy
U.S. government department regulating energy production and nuclear material handling
US Department of State
Federal executive department responsible for carrying out U.S. foreign policy and international relations
US Department of Justice
Primary federal criminal investigation and enforcement agency
US Army
Land warfare service branch of the United States Armed Forces.
USAID
U.S. federal government agency primarily responsible for administering civilian foreign aid and development assistance
Federal Communications Commission
regulates communications by radio, television, wire, satellite, and cable