sentences:  The National Order of the Arrow Conference (NOAC) is a multi-day event which usually takes place on a university campus, bringing together thousands of delegates from OA lodges around the nation for training and activities.NOACs are held every two years, with exceptions made to align the event with significant anniversaries.As a youth-led organization, these national conferences are organized and directed by the elected section and region youth officers, who serve on committees responsible for various conference aspects under the leadership of the conference vice-chief.