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Broken Arrow incidents. The US Department of Defense has officially recognized at least 32 "Broken Arrow" incidents from 1950 to 1980. [5] Examples of these events include: 1950 British Columbia B-36 crash. 1956 B-47 disappearance. 1958 Mars Bluff B-47 nuclear weapon loss incident. 1958 Tybee Island mid-air collision.
Levels and categories of classification. The United States government classifies sensitive information according to the degree which the unauthorized disclosure would damage national security. The three primary levels of classification (from least to greatest) are Confidential, Secret, and Top Secret.
Radar beacon. Racon signal as seen on a radar screen. This beacon receives using sidelobe suppression and transmits the letter "Q" in Morse code near Boston Harbor (Nahant) 17 January 1985. Radar beacon (short: racon) is – according to article 1.103 of the International Telecommunication Union's (ITU) ITU Radio Regulations (RR) [1 ...
Distraction is the process of diverting the attention of an individual or group from a desired area of focus and thereby blocking or diminishing the reception of desired information. Distraction is caused by: the lack of ability to pay attention; lack of interest in the object of attention; or the great intensity, novelty or attractiveness of ...
Hexspeak is a novelty form of variant English spelling using the hexadecimal digits. Created by programmers as memorable magic numbers, hexspeak words can serve as a clear and unique identifier with which to mark memory or data. Hexadecimal notation represents numbers using the 16 digits 0123456789ABCDEF. Using only the letters ABCDEF it is ...
Search engines, including web search engines, selection-based search engines, metasearch engines, desktop search tools, and web portals and vertical market websites have a search facility for online databases.
Police code. A police code is a brevity code, usually numerical or alphanumerical, used to transmit information between law enforcement over police radio systems in the United States. Examples of police codes include "10 codes" (such as 10-4 for "okay" or "acknowledged"—sometimes written X4 or X-4), signals, incident codes, response codes, or ...
Cargo 200 (Russian: Груз 200, Gruz dvésti) is a military code word used in the Soviet Union and the post-Soviet states referring to the transportation of military fatalities. Officially, the term Cargo 200 is military jargon to refer specifically to the corpses of soldiers contained in zinc-lined coffins for air transportation.
In telecommunication, a commercial code is a code once used to save on cablegram costs. [1] Telegraph (and telex) charged per word sent, so companies which sent large volumes of telegrams developed codes to save money on tolls.
The Soviet and now Russian call signs are more nearly code words, and so are not disclosed before launch. Each is given to a particular cosmonaut who commands a spacecraft, generally staying as his or her designation from spacecraft to spacecraft.