Charles Hall worked as a weather observer in the USAF in the mid to late sixties. He claims that to have had many interactions with tall white extraterrestrials that looked almost human, while serving at the Indiana Springs AFB. These aliens generally are about 5'10" to 6'0" though older Whites would be taller (around 6'4"). They have a thin frail body build, chalk white skin, large blue eyes, and nearly transparent platinum blonde hair. Their eyes are perhaps twice the size of human eyes and they stretch noticeably further around the sides of their heads than human eyes do. As the Whites grow older, they grow taller, and the colour of their eyes changes from blue to pink. Hall said that if the younger Tall Whites wear sufficiently large sunglasses to cover their eyes, they could walk among us undetected and pass for human. They are said to be vegetarian. They also do not seem to want anybody to know where they are coming from.
The Whites have a base at the Indiana Springs AFB in Nevada and assist the US Government with technology research.
Note that some authors also use the term 'Tall Whites' to refer to white-skinned or pale tall greys. This has caused some other authors to confuse the two.