Roughly: “If you don’t do a thorough job, you will kill the flight crew and they will not make it home to their families.

If the first part doesn’t bother you, you’ll also be court martialed and in a brig for a long, long time.”

Not the person you’re replying to, but a little common sense would imply warnings along the line of “if you don’t do this properly, a crew of innocent people fall out of the sky and fucking die whilst screaming all the way down”