The commander's assigned bitch in an US Air Force unit. Affectionately know as "the exec", these officers are responsible for all administrative, bureaucratic, and office minutia the USAF invents to screw with its units. Not to be confused with executive officers (XOs) in other military services where the term refers to the second in command).
General Officer: Can you write me a detailed report on this complex situation, along with a companion powerpoint that puts everything in simple terms that I can use to present this issue in 6-9 hours?
Colonel: No problem, my bitc... executive officer can whip it up in a snap, he loves doing that sort of thing anyways. You want some coffee, he's good at that too.