Camp X-Ray was a temporary detention facility at the Guantanamo Bay detention camp of Joint Task Force Guantanamo on the U.S. Naval Base in Guantánamo Bay, Cuba. The first twenty detainees arrived at Guantanamo on January 11, 2002. It was named Camp X-Ray because various temporary camps in the station were named sequentially from the beginning and then from the end of the NATO phonetic alphabet. The legal status of detainees at the camp has been a significant source of controversy, ultimately reaching the United States Supreme Court.

As of April 29, 2002, the official Camp X-Ray was closed and all prisoners were transferred to Camp Delta.

Camp X-Ray was originally built to house "excludables" in the mid 1990s when Fidel Castro allowed any Cuban wishing to do so, to cross through the Cuban operated minefields and enter the base. Excludables were held in Camp X-ray near Post 37 before being sent back to Cuba. Excludables included troublemakers in the regular camps where Cuban Asylum Seekers (CAS) were being processed to emigrate to the United States. The US government was at the time allowed access to Cuban records to process these people. Over 100,000 CAS were processed in the mid 1990s and allowed to enter the United States.

X-radiation (composed of X-rays) is a form of electromagnetic radiation. X-rays have a wavelength in the range of 0.01 to 10 nanometers, corresponding to frequencies in the range 30 petahertz to 30 exahertz (3×10¹⁶ Hz to 3×10¹⁹ Hz) and energies in the range 100 eV to 100 keV. They are shorter in wavelength than UV rays and longer than gamma rays. In many languages, X-radiation is called Röntgen radiation, after Wilhelm Röntgen, who is usually credited as its discoverer, and who had named it X-radiation to signify an unknown type of radiation. Correct spelling of X-ray(s) in the English language includes the variants x-ray(s) and X ray(s). XRAY is used as the phonetic pronunciation for the letter x.

X-rays up to about 10 keV (10 to 0.10 nm wavelength) are classified as "soft" X-rays, and from about 10 to 120 keV (0.10 to 0.01 nm wavelength) as "hard" X-rays, due to their penetrating abilities.

Hard X-rays can penetrate some solids and liquids, and all uncompressed gases, and their most common use is to image of the inside of objects in diagnostic radiography and crystallography. As a result, the term X-ray is metonymically used to refer to a radiographic image produced using this method, in addition to the method itself. By contrast, soft X-rays hardly penetrate matter at all; the attenuation length of 600 eV (~2 nm) X-rays in water is less than 1 micrometer.

Kristen Jaymes Stewart (born April 9, 1990) is an American actress. She is best known for playing Bella Swan in The Twilight Saga. She has starred in other films, including Panic Room (2002), Zathura (2005), In the Land of Women (2007), The Messengers (2007), Adventureland (2009), The Runaways (2010), and Snow White and the Huntsman. She will star in upcoming films in 2012: On the Road and The Twilight Saga: Breaking Dawn – Part 2.

Stewart was born and raised in Los Angeles, California. Her father, John Stewart, is a stage manager and television producer who has worked for Fox. Her mother, Jules Mann-Stewart, is a script supervisor originally from Maroochydore, Queensland, Australia. She has an older brother, Cameron Stewart, and an adopted brother, Taylor. Stewart attended school until the seventh grade and then continued her education by correspondence. She has since completed high school.

Her whole family all worked behind the camera and Stewart thought she would become a writer/director, but never considered being an actor. "I never wanted to be the center of attention – I wasn't that 'I want to be famous, I want to be an actor' kid. I never sought out acting, but I always practiced my autograph because I love pens. I'd write my name on everything." Stewart's acting career began at the age of eight, after an agent saw her perform in her elementary school's Christmas play. After a year of auditioning, Stewart's first role was a small nonspeaking part in the Disney Channel original film The Thirteenth Year. Then, she had another part in the film The Flintstones in Viva Rock Vegas as the "ring toss girl". She subsequently appeared in the independent film The Safety of Objects, in which she played the tomboy daughter of a troubled single mother (Patricia Clarkson). Stewart also played a tomboy in the film Panic Room, playing the diabetic daughter of a divorced mother (Jodie Foster). She was nominated for a Young Artist Award for her performance.