The 283d Engineer Detachment (Terrain Analysis) was a combat engineer detachment assigned to the 20th Engineer Brigade of the United States Army stationed at Fort Bragg, North Carolina. Although the members of the unit wore blue airborne tabs as part of the brigade's shoulder patch jump status was an option. The primary mission of the 283d was to provide land analysis for world wide missions of the XVIII Airborne Corps. It was primarily sequestered away from the brigade area and its members were required not to discuss its work outside of its secure location.[citation needed]