broken arrows

listen to the pronunciation of broken arrows
English - English
plural form of Broken Arrow
Broken Arrow
Alternative spelling of broken arrow, a nuclear accident
broken arrow
An accidental event that involves nuclear weapons or nuclear components but does not create the risk of nuclear war

In the US, the code name for a serious nuclear weapons incident is Broken Arrow. It is US policy neither to confirm nor deny the existence of nuclear weapons at any specific location; this also applies to Broken Arrow incidents.

broken arrow
a code phrase that a ground unit is facing imminent destruction from enemy attack and all available air forces within range are to provide air support immediately