According to US officials, the capture of Venezuelan President Nicolás Maduro on January 3 was carried out by Delta Force in collaboration with the 160th Special Operations Aviation Regiment (Airborne), also known as the "Night Stalkers." Feared and revered in equal measure, this specialist helicopter regiment has taken part in some of the most dangerous missions in recent US history. But who exactly are the Night Stalkers, why are they named as such, and where have they seen action?
Click through the following gallery and find out more about this shadowy special operations force.