A Noner (said Non-er) is some one of no importance, or lack there of. It derived from "Non-Essential Personel". The term is slang used largly by united states military members to describe the vast number of people who work away from the direct mission at hand.
1) A noner can be a person that works in finance, behind a desk in the warmth of a office. Their biggest threat is a chance that the stappler may brake and a staple come screaming out into their eye.
2)"Anyone who does not work on the flight line is a noner"