Q:Information: - Film stock is an analog medium that is used for recording motion pictures or animation. It is a strip or sheet of transparent plastic film base coated on one side with a gelatin emulsion containing microscopically small light-sensitive silver halide crystals. The sizes and other characteristics of the crystals determine the sensitivity, contrast and resolution of the film. The emulsion will gradually darken if left exposed to light, but the process is too slow and incomplete to be of any practical use. Instead, a very short exposure to the image formed by a camera lens is used to produce only a very slight chemical change, proportional to the amount of light absorbed by each crystal. This creates an invisible latent image in the emulsion, which can be chemically developed into a visible photograph. In addition to visible light, all films are sensitive to X-rays and high-energy particles. Most are at least slightly sensitive to invisible ultraviolet (UV) light. Some special-purpose films are sensitive into the infrared (IR) region of the spectrum. - Iron Maiden : Flight 666 is a concert documentary film featuring the British heavy metal band Iron Maiden . The film follows the band on the first leg of their Somewhere Back in Time World Tour between February and March 2008 , during which they travelled on their own customised Boeing 757 , Ed Force One , which used the call - sign '' 666 '' . Flight 666 is co-produced by Toronto - based Banger Films , known for their documentaries Metal : A Headbanger 's Journey , Global Metal and Rush : Beyond the Lighted Stage . The film was shot in high - definition video with accompanying 5.1 surround sound produced by Kevin Shirley ( who has worked with the band since their 2000 album Brave New World ) . It was distributed by Arts Alliance Media and EMI ( except in the US , where it was sub-distributed by D&E Entertainment ) in select digital theatres on 21 April 2009 . - Takeoff is the phase of flight in which an aerospace vehicle or animal goes from the ground to flying in the air. - A documentary film is a nonfictional motion picture intended to some aspect of reality, primarily for the purposes of instruction, education, or maintaining a historical record. Such films were originally shot on film stockthe only medium availablebut now include video and digital productions that can be either direct-to-video, made into a TV show, or released for screening in cinemas. "Documentary" has been described as a "filmmaking practice, a cinematic tradition, and mode of audience reception" that is continually evolving and is without clear boundaries. - PowerSlave, known as Exhumed in Europe and as in Japan, is a first-person shooter developed by Lobotomy Software and published by Playmates Interactive Entertainment. It was released in North America, Europe and Japan, for the Sega Saturn, PlayStation, and MS-DOS over the course of a year from late 1996 to late 1997. On May 24, 2015, Powerslave EX, an unofficial remake based on the PlayStation version, was released for free, but has since been removed for download until further notice. - Somewhere Back in Time World Tour was a concert tour by the heavy metal band Iron Maiden in 2008 and 2009, focused on the band's 1980s material, in particular songs from "Powerslave", "Somewhere In Time" and "Seventh Son of a Seventh Son". The tour tied in with the second part of the DVD series, entitled "The History of Iron Maiden", and prompted the release of a new greatest hits compilation, "Somewhere Back in Time". - A glass cockpit is an aircraft cockpit that features electronic (digital) flight instrument displays, typically large LCD screens, rather than the traditional style of analog dials and gauges. While a traditional cockpit (nicknamed as a "steam cockpit" within aviation circles) relies on numerous mechanical gauges to display information, a glass cockpit uses several displays driven by flight management systems, that can be adjusted (multi-function display) to display flight information as needed. This simplifies aircraft operation and navigation and allows pilots to focus only on the most pertinent information. They are also popular with airline companies as they usually eliminate the need for a flight engineer, saving costs. In recent years the technology has become widely available in small aircraft. - The seventh son of a seventh son is a concept from folklore regarding special powers given to, or held by, such a son. The seventh son must come from an unbroken line with no female siblings born between, and be, in turn, born to such a seventh son. The number has a long history of mystical and religious associations: seven virtues, seven deadly sins, seven Sleepers, seven-league boots, seven ages of man, seven days of creation, seven hills of Rome, seven lucky gods of Japanese mythology, the Seven Sages, seven sisters, seven stars, seven wonders of the world, etc. In this case, it refers to a man who is the seventh son of a man who is himself a seventh son. - A twinjet or twin-engine jet is a jet aircraft powered by two engines. Such configuration of an aircraft is the most popular today for commercial airliners, for fighters, and many other kinds, because while offering safety from a single engine failure, it is also acceptably fuel-efficient. - Direct-to-video or straight-to-video (also known as direct-to-VHS, direct-to-DVD, direct-to-Blu-ray, direct-to-digital, etc.) refers to the release of a film to the public immediately on home video formats rather than a theatrical release or television broadcast. Because inferior sequels or prequels of larger-budget films may be released direct to video, references to direct-to-video releases are often pejorative. Direct-to-video release has also become profitable for independent filmmakers and smaller companies. - The Boeing Company is an American multinational corporation that designs, manufactures, and sells airplanes, rotorcraft, rockets, and satellites worldwide. The company also provides leasing and product support services. Boeing is among the largest global aircraft manufacturers; it is the second-largest defense contractor in the world based on 2015 revenue, and is the largest exporter in the United States by dollar value. Boeing stock is a component of the Dow Jones Industrial Average. - Boeing Commercial Airplanes (BCA) is a division of The Boeing Company. It designs, assembles, markets, and sells jet airliners and business jets (Boeing Business Jets); it also provides product-related maintenance and training to customers worldwide. It operates from division headquarters in Renton, Washington, with more than a dozen engineering, manufacturing, and assembly facilities located throughout the U.S. and internationally. BCA includes the assets of the Douglas Aircraft division of the former McDonnell Douglas Corporation, which merged with Boeing in 1997. The current President and CEO of Boeing Commercial Airplanes is Raymond Conner, the former head of Sales, Marketing and Services. - The turbofan or fanjet is a type of airbreathing jet engine that is widely used in aircraft propulsion. The word "turbofan" is a portmanteau of "turbine" and "fan": the "turbo" portion refers to a gas turbine engine which achieves mechanical energy from combustion, and the "fan", a ducted fan that uses the mechanical energy from the gas turbine to accelerate air rearwards. Thus, whereas all the air taken in by a turbojet passes through the turbine (through the combustion chamber), in a turbofan some of that air bypasses the turbine. A turbofan thus can be thought of as a turbojet being used to drive a ducted fan, with both of those contributing to the thrust. The ratio of the mass-flow of air bypassing the engine core compared to the mass-flow of air passing through the core is referred to as the bypass ratio. The engine produces thrust through a combination of these two portions working in concert; engines that use more jet thrust relative to fan thrust are known as "low-bypass turbofans", conversely those that have considerably more fan thrust than jet thrust are known as "high-bypass". Most commercial aviation jet engines in use today are of the high-bypass type, and most modern military fighter engines are low-bypass. Afterburners are not used on high-bypass turbofan engines but may be used on either low-bypass turbofan or turbojet engines. - The Boeing 757 is a mid-size, narrow-body twin-engine jet airliner that was designed and built by Boeing Commercial Airplanes. It is the manufacturer's largest single-aisle passenger aircraft and was produced from 1981 to 2004. The twinjet has a two-crew member glass cockpit, turbofan engines of sufficient power to allow takeoffs from relatively short runways and higher altitudes, a conventional tail and, for reduced aerodynamic drag, a supercritical wing design. Intended to replace the smaller three-engine 727 on short and medium routes, the 757 can carry 200 to 295 passengers for a maximum of , depending on variant. The 757 was designed concurrently with a wide-body twinjet, the 767, and owing to shared features pilots can obtain a common type rating that allows them to operate both aircraft. - Somewhere Back in Time - The Best of: 1980 - 1989 is a best of release by the British heavy metal band Iron Maiden, containing a selection of songs originally recorded for their first eight albums (including "Live After Death"). - A type rating is a regulating agency's certification of an airplane pilot to fly a certain aircraft type that requires additional training beyond the scope of the initial license and aircraft class training. What aircraft require a type rating is decided by the local aviation authority. In many countries pilots of single-engined aircraft under a certain maximum weight (5,700kg or 12,500lb, typically) do not require a type rating for each model, all or most such aircraft being covered by one class rating instead. There are exceptions to this, e.g. under Joint Aviation Authorities (JAA) regulations the piston version of the Piper Malibu does require its own type rating. In New Zealand and South Africa there is no class rating, each aircraft model requiring its own rating. Countries which have adopted the class rating system for small aircraft typically require additional training and license endorsement for complexity features such as conventional undercarriage (tailwheels), variable-pitch propellers, retractable undercarriage, etc. Given the paragraphs above, decide what entity has the relation 'main subject' with 'aviation'.
A:
iron maiden: flight 666