America is an aerospace nation and flying is its life’s blood. Management of this precious resource is the responsibility of our air traffic control (ATC) system, and our ATC is the envy of the free world — the safest and most capable such organization on the globe.
The Department of Defense relies on the Federal Aviation Administration for air defense and national security. The National Capital Region, for example, relies on ATC to search and identify air threats before summoning DoD and U.S. Customs aircraft to intercept.
Source: Federal Times