Transportation technologies on a remote area like Antarctica need to be able to deal with extremely low temperatures and continuous winds to ensure the travelers' safety.[2] In December 1997 into February 1998 two AT44, 4x4 cars (built in Iceland by Arctic Trucks with tire size of 44-inch tall) joined an expedition by the Swedish Polar Institution (SWEA).The cars got used to transport people and supplies from the Ice shelf to WASA station, to perform scanning of the snow and support a drilling expedition to on the Antarctica Plateau 76°S 8°03'W.Travelling in a specially designed six wheel drive vehicle, the team completed the journey from the Antarctic coast at Patriot Hills to the geographic South Pole in 69 hours.Offshore anchorage is sparse and intermittent, but poses no problem to sailboats designed for the ice, typically with lifting keels and long shorelines.A number of tour boats, ranging from large motorized vessels to small sailing yachts, visit the Antarctic Peninsula during the summer months (January–March).Antarctic airports are subject to severe restrictions and limitations resulting from extreme seasonal and geographic conditions; they do not meet ICAO standards, and advance approval from the respective governmental or nongovernmental operating organization is required for landing (1999 est.)Flights to the continent in the permanent darkness of the winter are normally only undertaken in an emergency, with burning barrels of fuel to outline a runway.On September 11, 2008, a United States Air Force C-17 Globemaster III successfully completed the first landing in Antarctica using night-vision goggles at Pegasus Field.Ground crews needed to create a 2 km (6,600 ft) runway with tracked equipment not designed to operate in the low temperatures at that time of year, the aircraft controls had to be "jerry-rigged" when the flaps were frozen in position after landing, and instruments were not reliable because of the cold.