Original sentence: Tokachi Airport  is an airport located in Obihiro, Tokachi Subprefecture, Hokkaidō, Japan
Edited sentence: In 1956, operation was taken over by the JGSDF.In December 1964, the airfield became Obihiro Airport with a 1,000 m runway.In December 1972, the runway was extended to a length of 1,500 m.In February 1981, civil use of the airport ceased ahead of the opening of Tokachi-Obihiro Airport in March 1981.The airfield first opened in 1937 as an airfield for the Imperial Japanese Navy.The airfield is situated close to JGSDF Camp Obihiro.is an airfield located in Obihiro, Hokkaidō, Japan, operated by the Japan Ground Self-Defense Force (JGSDF).ja:帯広駐屯地