Usually, but not always, the term referred to recruits fresh from the United States who joined pre-existing units in Vietnam. Every unit had an FNG, and the term was used across all unit types, from front line combat through to support and medical units. The term was not gender specific; female personnel could be FNGs as well. The term is still used today in law enforcement, the United States Navy, Marines, Air Force, Coast Guard, Wildland Firefighters (esp. Hotshots) and the Canadian Military