"Broken Arrows"→

Business Insider:

Since 1950, there have been 32 nuclear weapon accidents, known as “Broken Arrows.” A Broken Arrow is defined as an unexpected event involving nuclear weapons that result in the accidental launching, firing, detonating, theft, or loss of the weapon. To date, six nuclear weapons have been lost and never recovered.

Whoops.
(I quite like this one:

Date: March 10, 1956
Location: Exact Location Unknown
Carrying two nuclear capsules on a nonstop flight from MacDill Air Force Base near Tampa, Florida to an overseas base, a B-47 was reported missing. It failed to make contact with a tanker over the Mediterranean for a second refueling. No trace was ever found of the plane.

Please tell me that there’s a James Bond movie about this.)