"Slack" is the loose drape in a line, rope. The term "slacks," as in the pants you wear, derives from the idea that they drape loosely from the waist.
You can Google the term, or you could take the word of a retired prof. with degrees in English and linguistics.
Firemen worry about "cook offs" in ammo storage just because it's one more thing to think about in a fire. We're drilled at the volunteer fire dept. here repeatedly about "car fires" in this area because most vehicles have guns and ammo in them.
But we're more concerned about fuel storage in garages and barns.
You can Google the term, or you could take the word of a retired prof. with degrees in English and linguistics.
Firemen worry about "cook offs" in ammo storage just because it's one more thing to think about in a fire. We're drilled at the volunteer fire dept. here repeatedly about "car fires" in this area because most vehicles have guns and ammo in them.
But we're more concerned about fuel storage in garages and barns.