What is broken arrow meaning?

Broken Arrow is a term used by the military and emergency services to indicate a nuclear safety event in which a nuclear weapon has been lost, stolen, or is at risk of detonation. The term originated in the 1950s and was used during the Cold War era. The term has also been used in popular culture, including in movies and TV shows. In Native American culture, a broken arrow is a symbol of peace and is used in tribal ceremonies to represent the end of a conflict.