The Air Force test facility at Groom Lake, Nevada—better known as Area 51—has harbored a wide variety of experimental aircraft the Pentagon would rather keep away from the prying eyes ...

The discovery of apparently classified records can set off alarm bells. But often, the federal government rules that the ...

The X-44 MANTA was a top-secret late 1990s experimental aircraft design, considered at a time when America had the latitude and the capacity to experiment widely. A Different Time In the late ...