‘One-in-a-million’ malfunction caused Marine artillery round to explode over highway, report finds

The detonation sent shrapnel falling onto Interstate 5, during a live-fire demonstration at Camp Pendleton in October.
KFI AM 640 on MSN

Report: 'One in a million defect' caused I-5 artillery shell explosion

A 666-page Marine Corps investigation found a rare fuze defect — a "one in a million" malfunction — caused a live artillery shell to explode over Interstate 5 near Camp Pendleton last October, ...