The original article was at Gruppo di intervento speciale. The list of authors can be seen in the page history.
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- "The GIS is headquartered in Livorno and falls under the authority of Comando interforze per le Operazioni delle Forze Speciali (COFS). Both the Ministry of Defense and the Ministry of the Interior can call them into action without a judge's approval. Their combat section includes three detachments of four-operative teams. The exploration, reconnaissance, and scouting section uses three operator-teams that include: two fighters, one explorer. They also maintain a sniper/recon team with two snipers and one scout."
— Siege In-game description
The Gruppo di Intervento Speciale (GIS, in English "Special Intervention Group") is an elite airborne special operations counter-terrorism tactical response unit inside the Italian Carabinieri military police, first formed in 1977. In 2004 the GIS evolved into a special forces unit. The unit has taken part in counter-terrorism operations and VIP, executive and dignitary protection security details ever since the inception of the GIS.