LDOs want their Good Conduct ribbons each and every bit as a great deal as Linus wants his stability blanket. Even while an LDO can pick out to have on only his/her leading 3 ribbons, they never do due to the fact they always have at the very least a few larger than Good Conduct and they need to have that 1 on exhibit lest they be mistaken for a serious junior officer. LSO: Landing Safety Officer or Landing Signals Officer.