The Vultee V-11 and V-12 were American attack aircraft of the 1930s. Developed from the Vultee V-1 single-engined airliner the V-11 and V-12 were purchased by several nation's armed forces including China who used them in combat against Japanese forces in the Second Sino-Japanese War. The United States Army Air Corps purchased seven V-11s as the Vultee YA-19 in the years before World War II testing them to gather data to compare against twin engine light attack planes. Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
Answer:
Mean Of Transportation