I think I read somewhere that this is the story behind Close Encounters of The Third kind.

Read More; http://crimsondreams.net/

This is the original posting by 'Anonymous', the key information provider on this site. Also included are three responses and seemingly independent verifications of the information.
First let me introduce myself. My name is Request Anonymous. I am a retired employee of the U.S. Government. I won't go into any great details about my past, but I was involved in a special program.

As for Roswell, it occurred, but not like the story books tell. There were two crash sites. One southwest of Corona, New Mexico and the second site at Pelona Peak, south of Datil, New Mexico.

The crash involved two extraterrestrial aircraft. The Corona site was found a day later by an archaeology team. This team reported the crash site to the Lincoln County Sheriff's department. A deputy arrived the next day and summoned a state police officer. One live entity [EBE] was found hiding behind a rock. The entity was given water but declined food. The entity was later transferred to Los Alamos...

Story continues with exchange of humans and zetas; http://crimsondreams.net/