Rare glitch caused artillery round to explode over 5 Freeway during JD Vance visit, report says

The electronic device that was used is manufactured to a standard of “one defect in a million,” and no human error was found, Marine investigators said of the Camp Pendleton incident.
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'One in a million' defect led to October I-5 artillery explosion, Marines say

A Marine Corps investigation could not conclusively say why the artillery shell's fuze malfunctioned but said no misconduct involved.
Yahoo

'0% malfunction rate,' until now: How military's plan to fire munitions over I-5 went awry

Add Yahoo as a preferred source to see more of our stories on Google. Osprey military aircraft fly over Camp Pendleton on Saturday. (Jonathan Alcorn / For The Times) It was supposed to be a boisterous ...
CNN

Marine Corps artillery mishap part of unusual firing over highway

The US Marine Corps is no stranger to firing live ordnance as part of training, but it had been years — more than 70, according to one US official — since Marines had fired artillery over a stretch of ...