Aircrew

The pilot was sitting in his seat and pulled out a .38 revolver. He placed it on top of the instrument panel, and then asked the navigator "Do you know what I use this for?"

The navigator replied timidly "No, what's it for?"

The pilot responded "I use this on navigators who get me lost!"

The navigator proceeded to pull out a .45 and place it on his chart table.

The pilot asked "What's that for?"

"To be honest sir" the navigator replied

Spoiler:

"I'll know we're lost before you will".