Greek alphabet glottal ("heth") was borrowed in two different functions by different dialects of Greek: as a letter for /h/ (Η, heta) by those dialects that had such a sound, and as an additional vowel letter for the long (Η, eta) by those dialects that lacked the consonant. Eventually, a seventh vowel letter for the long (Ω, omega) was introduced. Greek also introduced three new consonant letters for its aspirated plosive sounds and consonant clusters: Φ ("phi") for , Χ ("chi") for and Ψ ("psi") for . In western Greek variants, Χ was instead used for and Ψ for . The origin
Violent Gang and Terrorist Organization File Its information is also a source for the Terrorist Screening Database. Violent Gang and Terrorist Organization File The NCIC Violent Gang and Terrorist Organization File (VGTOF) was designed to provide identifying information about violent criminal gangs and terrorist organizations and their members to a wide variety of law enforcement personnel. This information warns law enforcement officers of the potential danger posed by violent individuals and to promote the exchange of information about these organizations and members to facilitate criminal investigations. The Violent Gang and Terrorist Organization File was implemented in December 1994. It is run by the National Criminal Information