National Geospatial-Intelligence AgencyThe dataset contains locations and attributes of P56A and P56B flight restrictions in the District of Columbia. A dataset provided by the National Geospatial-Intelligence Agency (NGA) identified P56A and P56B flight restrictions in DC. The data specifically comes from NGA's Digital Aeronautical Flight Information File (DAFIF).ArcGIS DynamicMapLayerhttps://hub.arcgis.com/datasets/e58297b25d034aee9e90c76e25210d99_19engOpen Data DCPublicNo Fly Zones [District of Columbia--Washington]Web servicesDistrict of Columbia--WashingtonDistrict of ColumbiaLast Modified: 2022-03-03