Chicago P.D. prides itself on featuring realistic police encounters, and having call signs is part of that. Each member of the Chicago P.D. Intelligence Unit has a specific call sign, or code name, ...

AL ASAD AIRBASE, Iraq — “The signs are like icons. If you were around a medical evacuation unit for a minute, then you have likely seen these signs on deployments,” said 1st Sgt. Alma Ortiztovar, 1st ...

In the testosterone-laden world of military aviation, call signs for pilots and other squadron personnel can be really sticky — the more an aviator complains about the moniker his colleagues bestow ...

Hundreds of call signs may be seen at the National Naval Aviation Museum in Pensacola, FL. Source: Carrie Kennedy The origin of aviator call signs is murky, even to military historians. But all agree ...