US 1st Special Forces (Airborne) consists of several Special Forces Groups (Airborne) and a few specialized Detachments smaller in size and more focused in technique than Groups. Each major SF Group is has a specific area of responsibility. When using the term "Green Beret" on a person, most Americans are thinking of 5th Special Forces Group (Airborne) and Special Forces Operatioal Detachment Delta - commonly "Delta Force" - because these organizations have received the most publicity from the mainsteam media. In reality there are usually between 5 and 15 active Special Forces Groups and operational Detachments). Most members of SF are recruited from within the US Army.