Tripflare

[2] In defensive operations, tripflares are usually placed in predetermined kill zones with machine guns sighted on them.

United States military tripflares are issued with a fuze resembling that found on the M67 grenade.

On February 3, 1971, an explosion at a trip flare munitions plant in Woodbine, Georgia, killed 29 and injured 50 people.

In November 1970, the Army fixed their mistake, reclassifying the material as Class 7, three months prior to the accident.

The notification of the change was forgotten in an officer's desk drawer,[2] and the plant was not informed until 22 days after the explosion.