Describes the isolated Nevada air base known as Area 51, covering its use for testing top-secret aircraft, and discusses speculation about a connection to unidentified flying objects.

Where is Area 51? -- Just a space on the map -- Gathering intelligence -- The Roswell connection -- The Cold War heats up -- UFOs or US aircraft? -- The Air Force strikes back -- Conspiracies -- The box -- Is there an Area 52? -- Area 51 today -- Timeline of Area 51 -- Timeline of the world.