Isicelo uchaza izimpawu ngesimo sendawo esetshenziselwa nokuchazwa US amabalazwe ezempi.
Izimpawu ezinikezwe kulesi sicelo bayavumelana jikelele nalabo abaqashwe yi-British Army, Canadian Army, Ishadi Aeronautical and Information Service of the US Air Force, lokuhlola amanzi Office of the US Navy, US Coast Geodetic Survey, US Forest Service Geological Servey nabanye.
izimpawu elicacisa ngesimo sendawo ahlelwe ngu izigaba, ezifana izici amanzi, impumuzo, imigwaqo nokunye
Kubuyekezwe ngo-
Feb 13, 2017