S4
The top secret installation at Area-51 where the nine gravity propelled discs were held, according to Robert Lazar.
Sea Shadow
A stealth battle cruiser constructed at Hughes Mining Barge mobile dock. Itīs been active since 1983.
SETI
Search for Extra-Terrestrial Intelligence. It was founded to scan the sky for electromagnetic waves from an unknown intelligence. The SETI project was shut down by US Congress in October 1993 due to budget cuts. Ufo researchers are skeptic to the project. As Dr. Pierre Guerin in "Flying Saucer Review", "The government already knows that aliens exist and donīt use electromagnetic waves at all. It would be similar to detect Indian smoke signals using a radio reciever."
Sigma
The first project to establish communications with the aliens. It started in 1954 and is still going on. The project succeeded in 1964 when a USAF officer met two aliens at a prearranged location in a desert in New Mexico.
Sign, Project
The first official USAF investigation and it started in January 1948. Founded to find out what UFOs were. The project ended in February 1049 and came up with the result that 20 % of all reports were unexplainable.
Sirius
Members of the Confederation of Humans.
Snowbird
This project started in 1972 and is still going on. Itīs a cover up project to put a shadow over the Redlight project. They built aircrafts that looked like flying saucers and flew them in front of the press.
Star Warriors
See Blues.
Sunberg, Jan-Ove
He was born in 1947 and for the last 30 years heīs benn researching the UFO phenomenon. 1983-86 he was the Chief editor for "The Unknown" a Swedish title. Heīs the author of the books "Phantom Submarines" and his latest work "The Great Lake Monster".