Cigarettes: Suicide Prevention

The secret weapon with many jumpers is smokes. That's why you always want to have a pack of cigarettes in your duty bag. The sweet promise of a Newport Lite, nay, the whole pack, has talked more than one suicidal soul off the ledge. Just don't forget the lighter. Cigarettes aren't much good without it.
-Adam Platinga, 400 Things Cops Know: Street Smart Lessons from a Veteran Cop