This happened on a flight getting ready to
depart for Chicago.

Jack was sitting on the plane when a guy
took the seat beside him. The guy was an
emotional wreck, pale, hands shaking,
moaning in fear.

"What's the matter?" Jack asked. "Are you afraid of flying?"

"No, but I've been transferred to Chicago, there's
crazy people there. They've got lots of
shootings, gangs, race riots, drugs,
poor public schools, and the highest
crime rate."

Jack replied, "I've lived in Chicago all my life.
It's not as bad as the media says. Find a
nice home, go to work, mind your own
business, enroll your kids in a nice private
school.

It's as safe a place as anywhere in the world."

The guy relaxed and stopped shaking and said,
"Oh, thank you. I've been worried to death.
But if you live there and say it's OK, I'll take your word for it. What do you do for a living?"

"Me?" said Jack. "I'm a tail gunner on a Budweiser truck."

That is good one. I know version "tail gunner on school bus" or "mail truck".