1. The airforce of the United States of America; the agency that defends the United States through control and exploitation of air and space
   - U. S. Air Force, US Air Force, Air Force, USAF

Type of: agency, authority, bureau, federal agency, government agency, office

Part of: Defense [US], Defense Department [US], Department of Defense, DoD, United States Department of Defense

Encyclopedia: United States Air Force

• order Selaginellales
• order Siluriformes
• order Siphonaptera
• order Siphonophora
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• Irving Howe