Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. USS Kalamazoo (AOR-6) -  USS Kalamazoo (AOR-6) was a Wichita-class replenishment oiler commissioned by the U.S. Navy in 1973. She continued to support Navy requirements until 1996 when she was placed in the reserve fleet and later struck.
Answer:
Mean Of Transportation